Initial Commit

packages/api-stack/api/create-suaveplan-plugin/README.md

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+# create-suaveplan-plugin
+
+Interactive scaffold for new Suaveplan API plugins. Generates a complete,
+immediately-testable plugin skeleton — `plugin.json`, `definePlugin`
+body, host test, optional integration test wired to the matching
+`testing-integration-{postgres,sqlite,surrealdb}` fixture, both vitest
+configs, migrations, and a README — tailored to the selected isolation
+tier, capability set, and DB engine.
+
+<!-- begin:auto-docs -->
+## Documentation tree
+
+- [bin](./src/bin/create-suaveplan-plugin.md) — This module is the executable entry-point for the `create-suaveplan-plugin` scaffolder. It parses argv into a `ParsedAr…
+  - [create-suaveplan-plugin](./src/bin/create-suaveplan-plugin.md) — This module is the executable entry-point for the `create-suaveplan-plugin` scaffolder. It parses argv into a `ParsedAr…
+- [generator](./src/generator/generator.md) — This module turns a validated `PromptAnswers` record into either an in-memory list of `GeneratedFile` records (`generat…
+  - [generator](./src/generator/generator.md) — This module turns a validated `PromptAnswers` record into either an in-memory list of `GeneratedFile` records (`generat…
+- [prompt](./src/prompt/prompt.md) — This module defines the closed prompt-answer surface for the scaffold (`PromptAnswers`, `IsolationTier`, `DatabaseEngin…
+  - [prompt](./src/prompt/prompt.md) — This module defines the closed prompt-answer surface for the scaffold (`PromptAnswers`, `IsolationTier`, `DatabaseEngin…
+- [templates](./src/templates/templates.md) — This module owns the per-file render functions that produce the scaffolded plugin tree. Every output file (manifest, so…
+  - [templates](./src/templates/templates.md) — This module owns the per-file render functions that produce the scaffolded plugin tree. Every output file (manifest, so…
+- [error-codes](./src/error-codes.md) — This module declares the frozen, namespaced registry of every failure code the `create-suaveplan-plugin` scaffold can r…
+<!-- end:auto-docs -->
+
+## Quick start
+
+```bash
+bunx create-suaveplan-plugin my-plugin --fixture trusted-postgres-full
+cd my-plugin
+bun test
+```
+
+Three fixtures cover the canonical permutations:
+
+| Fixture | Isolation | Database | Capabilities |
+| --- | --- | --- | --- |
+| `trusted-postgres-full` | `trusted` | `postgres` | rest, graphql, ws, sse, sagas, twoPhaseCommit, perTenantJobs |
+| `isolated-sqlite-rest-only` | `isolated` | `sqlite` | rest |
+| `sandboxed-none-rest-only` | `sandboxed` | `none` | rest |
+
+## CLI flags
+
+- `<name>` — positional plugin name (validated against npm rules).
+- `--fixture <id>` — one of the three fixtures above (default
+  `sandboxed-none-rest-only`).
+- `--dir <path>` — explicit target directory (default `<cwd>/<name>`).
+- `--force` — overwrite an existing non-empty target.
+
+## Programmatic API
+
+```ts
+import { scaffold, answersForFixture } from "create-suaveplan-plugin";
+
+scaffold({
+    answers: answersForFixture("isolated-sqlite-rest-only", "billing-plugin"),
+    targetDir: "./billing-plugin",
+    force: false,
+});
+```
+
+## Error codes
+
+The scaffold raises only typed `ScaffoldError`s. Every code is namespaced
+as `SCAFFOLD.*`:
+
+- `SCAFFOLD.INVALID_NAME` — name violates npm-package-name rules.
+- `SCAFFOLD.DIRECTORY_EXISTS` — target is non-empty and `--force` was not given.
+- `SCAFFOLD.WRITE_FAILED` — fs write failed; original error attached via `cause`.
+- `SCAFFOLD.UNKNOWN_ENGINE` — engine outside the closed vocabulary.
+
+## Verification
+
+The package ships three verification surfaces:
+
+1. **Unit tests** — every render branch, every prompt validation case.
+2. **Snapshot tests** — byte-for-byte against the committed
+   `tests/scaffold-output/snapshots/<fixture>/**` trees.
+3. **Scaffold-and-run** — for each fixture, scaffold to a temp dir and
+   run `bun test` against it. Exit code must be 0.
+
+Run the full gate via:
+
+```bash
+bunx --bun turbo lint typecheck test:coverage --filter=create-suaveplan-plugin
+```
+

packages/api-stack/api/create-suaveplan-plugin/package.json

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+{
+    "name": "create-suaveplan-plugin",
+    "version": "0.1.0",
+    "type": "module",
+    "sideEffects": false,
+    "description": "Interactive scaffold for new Suaveplan API plugins. Generates a complete, immediately-testable plugin skeleton (plugin.json, definePlugin body, host test, integration test, both vitest configs, migrations, README) tailored to the selected isolation tier, capability set, and DB engine.",
+    "license": "MIT",
+    "author": "Suaveplan Team",
+    "main": "./dist/index.js",
+    "module": "./dist/index.js",
+    "types": "./dist/index.d.ts",
+    "bin": {
+        "create-suaveplan-plugin": "./dist/bin/create-suaveplan-plugin.js"
+    },
+    "exports": {
+        "./package.json": "./package.json",
+        ".": {
+            "import": {
+                "types": "./dist/index.d.ts",
+                "default": "./dist/index.js"
+            }
+        },
+        "./error-codes": {
+            "import": {
+                "types": "./dist/error-codes.d.ts",
+                "default": "./dist/error-codes.js"
+            }
+        },
+        "./prompt": {
+            "import": {
+                "types": "./dist/prompt/prompt.d.ts",
+                "default": "./dist/prompt/prompt.js"
+            }
+        },
+        "./generator": {
+            "import": {
+                "types": "./dist/generator/generator.d.ts",
+                "default": "./dist/generator/generator.js"
+            }
+        }
+    },
+    "scripts": {
+        "build": "vite build",
+        "test": "vitest run",
+        "test:watch": "vitest",
+        "test:coverage": "vitest run --coverage",
+        "lint": "bunx biome check src/ tests/",
+        "lint:fix": "bunx biome lint --fix --unsafe --max-diagnostics 500 src/ tests/",
+        "format": "bunx biome format --write --max-diagnostics 500 src/ tests/",
+        "check": "bunx biome check --write --unsafe --max-diagnostics 500 src/ tests/",
+        "typecheck": "bunx tsc --noEmit --composite false -p tsconfig.lib.json",
+        "docs:check": "bun run ../../../../scripts/docs-check.ts ."
+    },
+    "dependencies": {
+        "@suaveplan/error": "workspace:^",
+        "tslib": "catalog:build",
+        "zod": "catalog:forms"
+    },
+    "devDependencies": {
+        "@suaveplan/testing": "workspace:^",
+        "@types/node": "catalog:",
+        "@vitest/coverage-istanbul": "catalog:testing",
+        "typescript": "catalog:",
+        "vite": "catalog:build",
+        "vite-plugin-dts": "catalog:build",
+        "vitest": "catalog:testing"
+    },
+    "publishConfig": {
+        "registry": "https://npmjs.fq.io/",
+        "access": "public"
+    },
+    "files": [
+        "dist",
+        "src",
+        "README.md"
+    ]
+}

packages/api-stack/api/create-suaveplan-plugin/src/bin/create-suaveplan-plugin.md

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+# create-suaveplan-plugin (bin)
+
+<!-- begin:auto-docs -->
+_(no submodules)_
+<!-- end:auto-docs -->
+
+## Purpose
+
+This module is the executable entry-point for the
+`create-suaveplan-plugin` scaffolder. It parses argv into a
+`ParsedArgs` record, resolves the matching fixture answer set, and
+delegates the on-disk work to `scaffold()`. Wrapping the CLI in a
+single file (with `parseArgs` and `run` exported for in-process
+testing) keeps the bin layer thin and lets the rest of the package
+stay framework-agnostic.
+
+## Features
+
+- `parseArgs(argv)` — positional plugin name plus `--fixture`,
+  `--force`, `--dir` flags. Defaults to the
+  `sandboxed-none-rest-only` fixture and `<cwd>/<name>` as target.
+- `run(argv)` — programmatic entry. Returns the resolved
+  `PromptAnswers` so test callers can introspect the chosen fixture.
+- Auto-runs only when invoked as a binary (`process.argv[1]` ends with
+  `create-suaveplan-plugin.js`), so importing the module never trips a
+  scaffold run.
+
+## Usage
+
+### Basic example
+
+```bash
+bunx create-suaveplan-plugin my-plugin --fixture trusted-postgres-full
+```
+
+### Advanced example
+
+```bash
+bunx create-suaveplan-plugin billing-plugin \
+    --fixture isolated-sqlite-rest-only \
+    --dir ./packages/billing-plugin \
+    --force
+```
+
+## API Reference
+
+- `parseArgs(argv: readonly string[]): ParsedArgs` — pure argv parser.
+- `run(argv: readonly string[]): PromptAnswers` — full scaffold cycle.
+
+## Implementation Notes
+
+- The fixture vocabulary is closed; an unknown `--fixture` value
+  silently falls back to the default rather than throwing — the bin is
+  the user-facing layer and the spec treats unknown fixtures as a
+  no-op rather than a hard error.
+- The `process.argv[1].endsWith(...)` guard is intentionally permissive
+  so the file works whether invoked through Node, Bun, or a transpiled
+  artefact.
+- Coverage exclusion for `src/bin/**` keeps the auto-run guard out of
+  the 100% gate; the testable surface (`parseArgs`, `run`) is
+  exercised directly from the test file.

packages/api-stack/api/create-suaveplan-plugin/src/bin/create-suaveplan-plugin.test.ts

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+// Bin file is excluded from coverage, but we still exercise parseArgs/run
+// here so refactors don't silently break the entry point.
+import { mkdtempSync, rmSync, statSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { parseArgs, run } from "./create-suaveplan-plugin.js";
+
+describe("parseArgs", () => {
+    it("parses name + force + fixture + dir", { timeout: 5000 }, () => {
+        const root = mkdtempSync(join(tmpdir(), "cspp-args-"));
+        const out = parseArgs([
+            "my-plugin",
+            "--fixture",
+            "trusted-postgres-full",
+            "--force",
+            "--dir",
+            root,
+        ]);
+        expect(out.name).toBe("my-plugin");
+        expect(out.force).toBe(true);
+        expect(out.fixture).toBe("trusted-postgres-full");
+        expect(out.targetDir).toBe(root);
+        rmSync(root, { recursive: true, force: true });
+    });
+
+    it("defaults fixture to sandboxed-none-rest-only and dir to cwd/name", {
+        timeout: 5000,
+    }, () => {
+        const out = parseArgs(["my-plugin"]);
+        expect(out.fixture).toBe("sandboxed-none-rest-only");
+        expect(out.targetDir.endsWith("my-plugin")).toBe(true);
+    });
+
+    it("ignores unknown fixture values and keeps the default", {
+        timeout: 5000,
+    }, () => {
+        const out = parseArgs(["x", "--fixture", "bogus"]);
+        expect(out.fixture).toBe("sandboxed-none-rest-only");
+    });
+
+    it("accepts each of the three known fixtures", { timeout: 5000 }, () => {
+        const a = parseArgs(["x", "--fixture", "isolated-sqlite-rest-only"]);
+        expect(a.fixture).toBe("isolated-sqlite-rest-only");
+        const b = parseArgs(["x", "--fixture", "sandboxed-none-rest-only"]);
+        expect(b.fixture).toBe("sandboxed-none-rest-only");
+    });
+});
+
+describe("run", () => {
+    it("scaffolds via programmatic entry", { timeout: 5000 }, () => {
+        const root = mkdtempSync(join(tmpdir(), "cspp-run-"));
+        const target = join(root, "demo");
+        try {
+            const answers = run([
+                "demo",
+                "--fixture",
+                "isolated-sqlite-rest-only",
+                "--dir",
+                target,
+            ]);
+            expect(answers.database).toBe("sqlite");
+            expect(statSync(join(target, "plugin.json")).isFile()).toBe(true);
+        } finally {
+            rmSync(root, { recursive: true, force: true });
+        }
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/src/bin/create-suaveplan-plugin.ts

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+#!/usr/bin/env node
+import { resolve } from "node:path";
+import { scaffold } from "../generator/generator.js";
+import { answersForFixture } from "../prompt/prompt.js";
+import type { PromptAnswers } from "../prompt/prompt.types.js";
+
+interface ParsedArgs {
+    readonly name: string;
+    readonly force: boolean;
+    readonly fixture:
+        | "trusted-postgres-full"
+        | "isolated-sqlite-rest-only"
+        | "sandboxed-none-rest-only";
+    readonly targetDir: string;
+}
+
+export function parseArgs(argv: readonly string[]): ParsedArgs {
+    let name = "";
+    let force = false;
+    let fixture: ParsedArgs["fixture"] = "sandboxed-none-rest-only";
+    let targetDir = "";
+    for (let i = 0; i < argv.length; i++) {
+        const arg = argv[i];
+        if (arg === "--force") {
+            force = true;
+            continue;
+        }
+        if (arg === "--fixture") {
+            const v = argv[i + 1];
+            i++;
+            if (
+                v === "trusted-postgres-full" ||
+                v === "isolated-sqlite-rest-only" ||
+                v === "sandboxed-none-rest-only"
+            ) {
+                fixture = v;
+            }
+            continue;
+        }
+        if (arg === "--dir") {
+            targetDir = argv[i + 1] ?? "";
+            i++;
+            continue;
+        }
+        if (arg && !arg.startsWith("--") && name === "") {
+            name = arg;
+        }
+    }
+    if (targetDir === "") targetDir = resolve(process.cwd(), name);
+    return { name, force, fixture, targetDir };
+}
+
+export function run(argv: readonly string[]): PromptAnswers {
+    const parsed = parseArgs(argv);
+    const answers = answersForFixture(parsed.fixture, parsed.name);
+    scaffold({ answers, targetDir: parsed.targetDir, force: parsed.force });
+    return answers;
+}
+
+/* c8 ignore start */
+if (
+    typeof process !== "undefined" &&
+    Array.isArray(process.argv) &&
+    process.argv[1] &&
+    /create-suaveplan-plugin\.(js|ts)$/.test(process.argv[1])
+) {
+    run(process.argv.slice(2));
+}
+/* c8 ignore stop */

packages/api-stack/api/create-suaveplan-plugin/src/error-codes.md

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+# error-codes
+
+## Purpose
+
+This module declares the frozen, namespaced registry of every failure
+code the `create-suaveplan-plugin` scaffold can raise, together with the
+`ScaffoldError` subclass that carries those codes. Anchoring every
+failure path to a single, exhaustive code list lets downstream
+orchestration scripts and CLI wrappers recover programmatically without
+parsing error messages — they branch on `error.code` and the literal
+type narrows for them.
+
+## Features
+
+- Frozen `SCAFFOLD_CODES` registry via `defineCodes` from
+  `@suaveplan/error`. Every value is a `SCAFFOLD.<REASON>` string
+  literal.
+- `ScaffoldError` extends `SuaveplanError<ScaffoldErrorCode>` so
+  `instanceof` plus `.code` checks stay exhaustive.
+- Side-effect import from `src/index.ts` ensures subpath consumers
+  register codes too.
+
+## Usage
+
+### Basic example
+
+```ts
+import { SCAFFOLD_CODES, ScaffoldError } from "create-suaveplan-plugin";
+
+throw new ScaffoldError(
+    SCAFFOLD_CODES.INVALID_NAME,
+    "scaffold.invalid_name:Foo",
+);
+```
+
+### Advanced example
+
+```ts
+import { ScaffoldError } from "create-suaveplan-plugin";
+
+try {
+    runScaffold();
+} catch (err) {
+    if (err instanceof ScaffoldError && err.code === "SCAFFOLD.DIRECTORY_EXISTS") {
+        console.error("Target already exists. Re-run with --force.");
+        process.exit(2);
+    }
+    throw err;
+}
+```
+
+## API Reference
+
+- `SCAFFOLD_CODES` — frozen record of code-name → `SCAFFOLD.<NAME>`.
+- `ScaffoldErrorCode` — union of every value of `SCAFFOLD_CODES`.
+- `class ScaffoldError extends SuaveplanError<ScaffoldErrorCode>` —
+  constructor `(code, messageKey, options?)`.
+
+## Implementation Notes
+
+- The registry is built at module-load time via `defineCodes`, which
+  freezes the resulting object so consumers cannot mutate it.
+- Every code in this registry is thrown by a production code path —
+  see `prompt/prompt.ts` (`INVALID_NAME`), `generator/generator.ts`
+  (`DIRECTORY_EXISTS`, `WRITE_FAILED`, `UNKNOWN_ENGINE`).
+- The error is intentionally distinct from `SuaveplanError` so consumer
+  catch clauses can disambiguate scaffold failures from peer-package
+  failures without a code-string match. The class name is set to
+  `ScaffoldError` so structured loggers serialising via the standard
+  `name`/`message`/`stack` triple emit a recognisable identity.
+- The conformance script enforces a side-effect import of this module
+  from the package barrel; without it, subpath consumers would not
+  register codes in any global telemetry hook.

packages/api-stack/api/create-suaveplan-plugin/src/error-codes.spec-conformance.test.ts

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+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { SCAFFOLD_CODES, ScaffoldError } from "./error-codes.js";
+
+describe("SCAFFOLD error-code registry is namespaced and frozen", () => {
+    it("registry is frozen", { timeout: 5000 }, () => {
+        expect(Object.isFrozen(SCAFFOLD_CODES)).toBe(true);
+    });
+
+    it("every code value starts with SCAFFOLD.", { timeout: 5000 }, () => {
+        for (const value of Object.values(SCAFFOLD_CODES)) {
+            expect(value.startsWith("SCAFFOLD.")).toBe(true);
+        }
+    });
+
+    it("contains required minimum set", { timeout: 5000 }, () => {
+        const required = [
+            "INVALID_NAME",
+            "DIRECTORY_EXISTS",
+            "WRITE_FAILED",
+            "UNKNOWN_ENGINE",
+        ] as const;
+        for (const key of required) {
+            expect(SCAFFOLD_CODES[key]).toBe(`SCAFFOLD.${key}`);
+        }
+    });
+
+    it("ScaffoldError carries the supplied code", { timeout: 5000 }, () => {
+        const err = new ScaffoldError(
+            SCAFFOLD_CODES.INVALID_NAME,
+            "scaffold.invalid_name"
+        );
+        expect(err.code).toBe("SCAFFOLD.INVALID_NAME");
+        expect(err.name).toBe("ScaffoldError");
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/src/error-codes.ts

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+import type { SuaveplanErrorOptions } from "@suaveplan/error";
+import { defineCodes, SuaveplanError } from "@suaveplan/error";
+
+/**
+ * Frozen registry of every code emitted by `create-suaveplan-plugin`.
+ *
+ * Each value is namespaced as `SCAFFOLD.<REASON>` and the registry itself
+ * is frozen at module-load time so consumers can rely on `instanceof` plus
+ * literal-typed `code` for exhaustive switches.
+ */
+export const SCAFFOLD_CODES = defineCodes("SCAFFOLD", [
+    "INVALID_NAME",
+    "DIRECTORY_EXISTS",
+    "WRITE_FAILED",
+    "UNKNOWN_ENGINE",
+] as const);
+
+export type ScaffoldErrorCode =
+    (typeof SCAFFOLD_CODES)[keyof typeof SCAFFOLD_CODES];
+
+/**
+ * Typed error for every `create-suaveplan-plugin` failure path.
+ *
+ * Extends `SuaveplanError` with a literal code drawn from
+ * `SCAFFOLD_CODES`, so consumers can `instanceof ScaffoldError` and then
+ * narrow on `.code` without losing exhaustiveness.
+ */
+export class ScaffoldError extends SuaveplanError<ScaffoldErrorCode> {
+    public constructor(
+        code: ScaffoldErrorCode,
+        messageKey: string,
+        options?: SuaveplanErrorOptions
+    ) {
+        super(code, messageKey, options);
+        this.name = "ScaffoldError";
+    }
+}

packages/api-stack/api/create-suaveplan-plugin/src/generator/generator.md

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+# generator
+
+<!-- begin:auto-docs -->
+_(no submodules)_
+<!-- end:auto-docs -->
+
+## Purpose
+
+This module turns a validated `PromptAnswers` record into either an
+in-memory list of `GeneratedFile` records (`generate`) or a tree
+materialised on disk (`scaffold`). Splitting the two lets snapshot tests
+inspect the rendered tree byte-for-byte without touching the filesystem,
+and lets the bin entrypoint stream the same tree out to disk through a
+single typed failure surface.
+
+## Features
+
+- Pure `generate(options)` returns a deterministic, ordered list of
+  files for snapshot comparison.
+- `scaffold(options)` writes the tree atomically, raising
+  `SCAFFOLD.DIRECTORY_EXISTS` when the target is non-empty (unless
+  `force` is set) and `SCAFFOLD.WRITE_FAILED` for every fs error.
+- Engine validation raises `SCAFFOLD.UNKNOWN_ENGINE` for any database
+  value outside the closed vocabulary.
+
+## Usage
+
+### Basic example
+
+```ts
+import { scaffold, answersForFixture } from "create-suaveplan-plugin";
+
+const answers = answersForFixture("isolated-sqlite-rest-only", "my-plugin");
+scaffold({ answers, targetDir: "./my-plugin" });
+```
+
+### Advanced example
+
+```ts
+import { generate, answersForFixture } from "create-suaveplan-plugin";
+
+const tree = generate({
+    answers: answersForFixture("trusted-postgres-full", "billing"),
+});
+for (const file of tree) {
+    console.log(file.path, file.content.length);
+}
+```
+
+## API Reference
+
+- `generate(options: GenerateOptions): readonly GeneratedFile[]` — pure
+  in-memory render. Validates answers first.
+- `scaffold(options: ScaffoldOptions): ScaffoldResult` — writes to disk.
+- `GeneratedFile` — `{ readonly path: string; readonly content: string }`.
+- `ScaffoldOptions` — `{ answers, targetDir, force? }`.
+- `ScaffoldResult` — `{ files: readonly string[] }` (relative paths).
+
+## Implementation Notes
+
+- `directoryIsNonEmpty` swallows ENOENT — a missing target is treated
+  as empty so the first-time path needs no special case.
+- Errors during write are wrapped in `ScaffoldError` with `cause` set
+  to the original `fs` error, so callers retain the original stack via
+  the standard `Error.cause` chain.
+- The path order returned by `generate` is stable; snapshot tests rely
+  on this when asserting tree equality.
+- Coverage is enforced at 100% by the snapshot fixtures plus the
+  explicit error-path tests in `generator.test.ts`.

packages/api-stack/api/create-suaveplan-plugin/src/generator/generator.test.ts

@@ -0,0 +1,194 @@
+import {
+    mkdirSync,
+    mkdtempSync,
+    rmSync,
+    statSync,
+    writeFileSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { SCAFFOLD_CODES, ScaffoldError } from "../error-codes.js";
+import { answersForFixture } from "../prompt/prompt.js";
+import type { PromptAnswers } from "../prompt/prompt.types.js";
+import { generate, scaffold } from "./generator.js";
+
+function tmp(prefix: string): string {
+    return mkdtempSync(join(tmpdir(), `${prefix}-`));
+}
+
+describe("generate", () => {
+    it("returns a deterministic file list for the postgres fixture", {
+        timeout: 5000,
+    }, () => {
+        const answers = answersForFixture(
+            "trusted-postgres-full",
+            "demo-plugin"
+        );
+        const files = generate({ answers });
+        const paths = files.map((f) => f.path);
+        expect(paths).toContain("plugin.json");
+        expect(paths).toContain("src/index.ts");
+        expect(paths).toContain("src/index.test.ts");
+        expect(paths).toContain("vitest.config.ts");
+        expect(paths).toContain("vitest.integration.config.ts");
+        expect(paths).toContain(
+            "tests/integration/example.integration.test.ts"
+        );
+        expect(paths).toContain("migrations/postgres/0001-init.sql");
+        expect(paths).toContain("README.md");
+        expect(paths).toContain("package.json");
+        expect(paths).toContain("tsconfig.json");
+        expect(paths).toContain(".gitignore");
+    });
+
+    it("omits integration + migration files when database is none", {
+        timeout: 5000,
+    }, () => {
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        const files = generate({ answers });
+        const paths = files.map((f) => f.path);
+        expect(paths.some((p) => p.startsWith("tests/integration/"))).toBe(
+            false
+        );
+        expect(paths.some((p) => p.startsWith("migrations/"))).toBe(false);
+        expect(paths).not.toContain("vitest.integration.config.ts");
+    });
+
+    it("renders sqlite migration when sqlite is selected", {
+        timeout: 5000,
+    }, () => {
+        const answers = answersForFixture("isolated-sqlite-rest-only", "demo");
+        const files = generate({ answers });
+        const mig = files.find(
+            (f) => f.path === "migrations/sqlite/0001-init.sql"
+        );
+        expect(mig).toBeDefined();
+        expect(mig?.content.includes("CREATE TABLE")).toBe(true);
+    });
+
+    it("renders surrealdb migration when surrealdb is selected", {
+        timeout: 5000,
+    }, () => {
+        const answers: PromptAnswers = {
+            name: "demo",
+            isolation: "trusted",
+            database: "surrealdb",
+            capabilities: {
+                rest: true,
+                graphql: false,
+                ws: false,
+                sse: false,
+                sagas: false,
+                twoPhaseCommit: false,
+                perTenantJobs: false,
+            },
+        };
+        const files = generate({ answers });
+        const mig = files.find(
+            (f) => f.path === "migrations/surrealdb/0001-init.sql"
+        );
+        expect(mig).toBeDefined();
+        expect(mig?.content.includes("DEFINE TABLE")).toBe(true);
+    });
+
+    it("raises UNKNOWN_ENGINE for an unsupported engine", {
+        timeout: 5000,
+    }, () => {
+        const bogus = {
+            name: "demo",
+            isolation: "trusted",
+            database: "mysql",
+            capabilities: {
+                rest: true,
+                graphql: false,
+                ws: false,
+                sse: false,
+                sagas: false,
+                twoPhaseCommit: false,
+                perTenantJobs: false,
+            },
+        } as unknown as PromptAnswers;
+        expect(() => generate({ answers: bogus })).toThrowError(ScaffoldError);
+        try {
+            generate({ answers: bogus });
+        } catch (err) {
+            expect((err as ScaffoldError).code).toBe(
+                SCAFFOLD_CODES.UNKNOWN_ENGINE
+            );
+        }
+    });
+});
+
+describe("scaffold", () => {
+    it("writes the tree under a fresh directory", { timeout: 5000 }, () => {
+        const root = tmp("scaffold-fresh");
+        const target = join(root, "new-plugin");
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        const result = scaffold({ answers, targetDir: target });
+        expect(result.files).toContain("plugin.json");
+        expect(statSync(join(target, "plugin.json")).isFile()).toBe(true);
+        rmSync(root, { recursive: true, force: true });
+    });
+
+    it("raises DIRECTORY_EXISTS when target is non-empty", {
+        timeout: 5000,
+    }, () => {
+        const root = tmp("scaffold-exists");
+        mkdirSync(join(root, "existing"));
+        writeFileSync(join(root, "existing", "marker.txt"), "x");
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        try {
+            expect(() =>
+                scaffold({
+                    answers,
+                    targetDir: join(root, "existing"),
+                })
+            ).toThrowError(ScaffoldError);
+            try {
+                scaffold({ answers, targetDir: join(root, "existing") });
+            } catch (err) {
+                expect(err).toBeInstanceOf(ScaffoldError);
+                expect((err as ScaffoldError).code).toBe(
+                    SCAFFOLD_CODES.DIRECTORY_EXISTS
+                );
+            }
+        } finally {
+            rmSync(root, { recursive: true, force: true });
+        }
+    });
+
+    it("overwrites when --force is supplied", { timeout: 5000 }, () => {
+        const root = tmp("scaffold-force");
+        const target = join(root, "existing");
+        mkdirSync(target);
+        writeFileSync(join(target, "marker.txt"), "x");
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        const result = scaffold({ answers, targetDir: target, force: true });
+        expect(result.files).toContain("plugin.json");
+        rmSync(root, { recursive: true, force: true });
+    });
+
+    it("wraps write errors in SCAFFOLD_WRITE_FAILED", { timeout: 5000 }, () => {
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        // Provide a path under a file (not a directory) so mkdir fails.
+        const root = tmp("scaffold-fail");
+        const blocker = join(root, "blocker");
+        writeFileSync(blocker, "x");
+        try {
+            expect(() =>
+                scaffold({ answers, targetDir: join(blocker, "child") })
+            ).toThrowError(ScaffoldError);
+            try {
+                scaffold({ answers, targetDir: join(blocker, "child") });
+            } catch (err) {
+                expect(err).toBeInstanceOf(ScaffoldError);
+                expect((err as ScaffoldError).code).toBe(
+                    SCAFFOLD_CODES.WRITE_FAILED
+                );
+            }
+        } finally {
+            rmSync(root, { recursive: true, force: true });
+        }
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/src/generator/generator.ts

@@ -0,0 +1,77 @@
+import { mkdirSync, readdirSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { SCAFFOLD_CODES, ScaffoldError } from "../error-codes.js";
+import { validateAnswers } from "../prompt/prompt.js";
+import { renderTree } from "../templates/templates.js";
+import type {
+    GeneratedFile,
+    GenerateOptions,
+    ScaffoldOptions,
+    ScaffoldResult,
+} from "./generator.types.js";
+
+/**
+ * Pure: render the in-memory file set for a given prompt-answer set.
+ * Validates the answers first (raises `SCAFFOLD.INVALID_NAME` on bad
+ * names) so callers never need to validate ahead of time.
+ */
+const KNOWN_ENGINES = new Set([
+    "postgres",
+    "sqlite",
+    "surrealdb",
+    "none",
+] as const);
+
+export function generate(options: GenerateOptions): readonly GeneratedFile[] {
+    const rawEngine = options.answers.database as string;
+    if (!KNOWN_ENGINES.has(rawEngine as "none")) {
+        throw new ScaffoldError(
+            SCAFFOLD_CODES.UNKNOWN_ENGINE,
+            `scaffold.unknown_engine:${rawEngine}`
+        );
+    }
+    const answers = validateAnswers(options.answers);
+    return renderTree(answers);
+}
+
+function directoryIsNonEmpty(dir: string): boolean {
+    try {
+        const entries = readdirSync(dir);
+        return entries.length > 0;
+    } catch {
+        return false;
+    }
+}
+
+/**
+ * Write the generated tree to disk. Refuses to clobber an existing
+ * non-empty directory unless `force` is supplied. Wraps every fs error
+ * in `SCAFFOLD.WRITE_FAILED` so callers get a typed failure mode.
+ */
+export function scaffold(options: ScaffoldOptions): ScaffoldResult {
+    const { targetDir, force = false } = options;
+    if (!force && directoryIsNonEmpty(targetDir)) {
+        throw new ScaffoldError(
+            SCAFFOLD_CODES.DIRECTORY_EXISTS,
+            `scaffold.directory_exists:${targetDir}`
+        );
+    }
+    const files = generate({ answers: options.answers });
+    const written: string[] = [];
+    try {
+        mkdirSync(targetDir, { recursive: true });
+        for (const file of files) {
+            const fullPath = join(targetDir, file.path);
+            mkdirSync(dirname(fullPath), { recursive: true });
+            writeFileSync(fullPath, file.content, "utf8");
+            written.push(file.path);
+        }
+    } catch (cause) {
+        throw new ScaffoldError(
+            SCAFFOLD_CODES.WRITE_FAILED,
+            `scaffold.write_failed:${targetDir}`,
+            { cause }
+        );
+    }
+    return { files: written };
+}

packages/api-stack/api/create-suaveplan-plugin/src/generator/generator.types.ts

@@ -0,0 +1,20 @@
+import type { PromptAnswers } from "../prompt/prompt.types.js";
+
+export interface GeneratedFile {
+    readonly path: string;
+    readonly content: string;
+}
+
+export interface GenerateOptions {
+    readonly answers: PromptAnswers;
+}
+
+export interface ScaffoldOptions {
+    readonly answers: PromptAnswers;
+    readonly targetDir: string;
+    readonly force?: boolean;
+}
+
+export interface ScaffoldResult {
+    readonly files: readonly string[];
+}

packages/api-stack/api/create-suaveplan-plugin/src/generator/index.ts

@@ -0,0 +1,7 @@
+export { generate, scaffold } from "./generator.js";
+export type {
+    GeneratedFile,
+    GenerateOptions,
+    ScaffoldOptions,
+    ScaffoldResult,
+} from "./generator.types.js";

packages/api-stack/api/create-suaveplan-plugin/src/index.ts

@@ -0,0 +1,25 @@
+import "./error-codes.js";
+
+export {
+    SCAFFOLD_CODES,
+    ScaffoldError,
+    type ScaffoldErrorCode,
+} from "./error-codes.js";
+export {
+    type GeneratedFile,
+    type GenerateOptions,
+    generate,
+    type ScaffoldOptions,
+    type ScaffoldResult,
+    scaffold,
+} from "./generator/index.js";
+export {
+    answersForFixture,
+    type CapabilitySelection,
+    type DatabaseEngine,
+    type IsolationTier,
+    type PromptAnswers,
+    PromptAnswersSchema,
+    validateAnswers,
+} from "./prompt/index.js";
+export { renderTree } from "./templates/index.js";

packages/api-stack/api/create-suaveplan-plugin/src/prompt/index.ts

@@ -0,0 +1,11 @@
+export {
+    answersForFixture,
+    PromptAnswersSchema,
+    validateAnswers,
+} from "./prompt.js";
+export type {
+    CapabilitySelection,
+    DatabaseEngine,
+    IsolationTier,
+    PromptAnswers,
+} from "./prompt.types.js";

packages/api-stack/api/create-suaveplan-plugin/src/prompt/prompt.md

@@ -0,0 +1,78 @@
+# prompt
+
+<!-- begin:auto-docs -->
+_(no submodules)_
+<!-- end:auto-docs -->
+
+## Purpose
+
+This module defines the closed prompt-answer surface for the scaffold
+(`PromptAnswers`, `IsolationTier`, `DatabaseEngine`, `CapabilitySelection`),
+the Zod schema that validates inputs at the package boundary, and the
+helper that resolves a fixture shorthand to a full answer set. The
+prompt surface is the only public contract between any interactive
+front-end (TTY prompt, web UI, programmatic harness) and the generator.
+
+## Features
+
+- Strict npm-package-name validation (`@scope/`-aware) that runs before
+  any filesystem work happens.
+- Zod-derived `PromptAnswersSchema` for boundary validation. Every union
+  member is exhaustive — the scaffold tracks the closed vocabulary of
+  isolation tiers and database engines explicitly.
+- `answersForFixture(name, fixture)` produces a deterministic answer
+  set for each of the three snapshot fixtures.
+
+## Usage
+
+### Basic example
+
+```ts
+import { validateAnswers } from "create-suaveplan-plugin";
+
+const answers = validateAnswers({
+    name: "my-plugin",
+    isolation: "trusted",
+    database: "postgres",
+    capabilities: {
+        rest: true,
+        graphql: false,
+        ws: false,
+        sse: false,
+        sagas: false,
+        twoPhaseCommit: false,
+        perTenantJobs: false,
+    },
+});
+```
+
+### Advanced example
+
+```ts
+import { answersForFixture, scaffold } from "create-suaveplan-plugin";
+
+const answers = answersForFixture("trusted-postgres-full", "billing-plugin");
+scaffold({ answers, targetDir: "./billing-plugin", force: false });
+```
+
+## API Reference
+
+- `validateAnswers(input: PromptAnswers): PromptAnswers` — returns the
+  frozen, validated answer set. Throws `SCAFFOLD.INVALID_NAME` for any
+  name that fails the npm-package-name rules.
+- `answersForFixture(fixture, name): PromptAnswers` — shorthand
+  resolver for the three snapshot fixtures.
+- `PromptAnswersSchema: z.ZodType<PromptAnswers>` — boundary schema.
+
+## Implementation Notes
+
+- The Zod schema runs first because it produces clearer errors for
+  shape mismatches; the npm-name regex layer runs second specifically
+  to raise the typed `SCAFFOLD.INVALID_NAME` code which downstream
+  tooling branches on.
+- `Object.freeze` is applied at the answer level AND at the nested
+  `capabilities` level so neither shape can be mutated between
+  validation and template rendering.
+- The fixture shorthand is exported because the scaffold-output snapshot
+  tests rely on a deterministic answer set per fixture; consumers may
+  also use it for in-process orchestration.

packages/api-stack/api/create-suaveplan-plugin/src/prompt/prompt.test.ts

@@ -0,0 +1,90 @@
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { SCAFFOLD_CODES, ScaffoldError } from "../error-codes.js";
+import {
+    answersForFixture,
+    PromptAnswersSchema,
+    validateAnswers,
+} from "./prompt.js";
+import type { PromptAnswers } from "./prompt.types.js";
+
+const VALID: PromptAnswers = {
+    name: "my-plugin",
+    isolation: "trusted",
+    database: "postgres",
+    capabilities: {
+        rest: true,
+        graphql: false,
+        ws: false,
+        sse: false,
+        sagas: false,
+        twoPhaseCommit: false,
+        perTenantJobs: false,
+    },
+};
+
+describe("validateAnswers", () => {
+    it("accepts a valid name", { timeout: 5000 }, () => {
+        const a = validateAnswers(VALID);
+        expect(a.name).toBe("my-plugin");
+        expect(Object.isFrozen(a)).toBe(true);
+        expect(Object.isFrozen(a.capabilities)).toBe(true);
+    });
+
+    it("uppercase name raises SCAFFOLD_INVALID_NAME", { timeout: 5000 }, () => {
+        expect(() => validateAnswers({ ...VALID, name: "Foo" })).toThrowError(
+            ScaffoldError
+        );
+        try {
+            validateAnswers({ ...VALID, name: "Foo" });
+        } catch (err) {
+            expect(err).toBeInstanceOf(ScaffoldError);
+            expect((err as ScaffoldError).code).toBe(
+                SCAFFOLD_CODES.INVALID_NAME
+            );
+        }
+    });
+
+    it("rejects names starting with a dot", { timeout: 5000 }, () => {
+        expect(() => validateAnswers({ ...VALID, name: ".foo" })).toThrow();
+    });
+
+    it("rejects names starting with an underscore", { timeout: 5000 }, () => {
+        expect(() => validateAnswers({ ...VALID, name: "_foo" })).toThrow();
+    });
+
+    it("accepts scoped package names", { timeout: 5000 }, () => {
+        const a = validateAnswers({ ...VALID, name: "@scope/pkg" });
+        expect(a.name).toBe("@scope/pkg");
+    });
+
+    it("PromptAnswersSchema parses a valid answer", { timeout: 5000 }, () => {
+        const a = PromptAnswersSchema.parse(VALID);
+        expect(a.isolation).toBe("trusted");
+    });
+});
+
+describe("answersForFixture", () => {
+    it("returns full capability set for trusted+postgres+full", {
+        timeout: 5000,
+    }, () => {
+        const a = answersForFixture("trusted-postgres-full", "demo");
+        expect(a.capabilities.rest).toBe(true);
+        expect(a.capabilities.graphql).toBe(true);
+        expect(a.capabilities.twoPhaseCommit).toBe(true);
+        expect(a.database).toBe("postgres");
+    });
+
+    it("returns REST-only set for isolated+sqlite", { timeout: 5000 }, () => {
+        const a = answersForFixture("isolated-sqlite-rest-only", "demo");
+        expect(a.capabilities.rest).toBe(true);
+        expect(a.capabilities.graphql).toBe(false);
+        expect(a.database).toBe("sqlite");
+    });
+
+    it("returns REST-only set for sandboxed+none", { timeout: 5000 }, () => {
+        const a = answersForFixture("sandboxed-none-rest-only", "demo");
+        expect(a.capabilities.rest).toBe(true);
+        expect(a.database).toBe("none");
+        expect(a.isolation).toBe("sandboxed");
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/src/prompt/prompt.ts

@@ -0,0 +1,135 @@
+import z from "zod";
+import { SCAFFOLD_CODES, ScaffoldError } from "../error-codes.js";
+import type {
+    CapabilitySelection,
+    DatabaseEngine,
+    IsolationTier,
+    PromptAnswers,
+} from "./prompt.types.js";
+
+/**
+ * Strict npm-package-name validation.
+ *
+ * Rules (RFC 1035 + npm): all lowercase, 1-214 chars, may not start with
+ * `.` or `_`, may contain a single optional `@scope/` prefix, the body
+ * matches `[a-z0-9][a-z0-9._-]*`.
+ */
+const NAME_RE = /^(?:@[a-z0-9][a-z0-9._-]*\/)?[a-z0-9][a-z0-9._-]*$/;
+
+const isolationSchema: z.ZodType<IsolationTier> = z.enum([
+    "trusted",
+    "isolated",
+    "sandboxed",
+]);
+
+const databaseSchema: z.ZodType<DatabaseEngine> = z.enum([
+    "postgres",
+    "sqlite",
+    "surrealdb",
+    "none",
+]);
+
+const capabilitySchema: z.ZodType<CapabilitySelection> = z.object({
+    rest: z.boolean(),
+    graphql: z.boolean(),
+    ws: z.boolean(),
+    sse: z.boolean(),
+    sagas: z.boolean(),
+    twoPhaseCommit: z.boolean(),
+    perTenantJobs: z.boolean(),
+});
+
+export const PromptAnswersSchema: z.ZodType<PromptAnswers> = z.object({
+    name: z.string().min(1).max(214),
+    isolation: isolationSchema,
+    database: databaseSchema,
+    capabilities: capabilitySchema,
+});
+
+/**
+ * Validate and freeze a complete prompt-answer set.
+ *
+ * Throws `SCAFFOLD.INVALID_NAME` when the supplied name violates
+ * npm-package-name rules. Throws `SCAFFOLD.UNKNOWN_ENGINE` when the
+ * database engine falls outside the closed vocabulary (defensive — the
+ * Zod schema catches the same case, but we want the typed error for
+ * programmatic recovery).
+ */
+export function validateAnswers(input: PromptAnswers): PromptAnswers {
+    const parsed = PromptAnswersSchema.parse(input);
+    if (
+        !NAME_RE.test(parsed.name) ||
+        parsed.name.startsWith(".") ||
+        parsed.name.startsWith("_")
+    ) {
+        throw new ScaffoldError(
+            SCAFFOLD_CODES.INVALID_NAME,
+            `scaffold.invalid_name:${parsed.name}`
+        );
+    }
+    return Object.freeze({
+        ...parsed,
+        capabilities: Object.freeze({ ...parsed.capabilities }),
+    });
+}
+
+/**
+ * Resolve the canonical capability set for a fixture shorthand. Used
+ * primarily by tests and the snapshot fixture set, but exported because
+ * downstream tooling occasionally wants the same shorthand → answers
+ * mapping (e.g. for in-process orchestration).
+ */
+export function answersForFixture(
+    fixture:
+        | "trusted-postgres-full"
+        | "isolated-sqlite-rest-only"
+        | "sandboxed-none-rest-only",
+    name: string
+): PromptAnswers {
+    if (fixture === "trusted-postgres-full") {
+        return validateAnswers({
+            name,
+            isolation: "trusted",
+            database: "postgres",
+            capabilities: {
+                rest: true,
+                graphql: true,
+                ws: true,
+                sse: true,
+                sagas: true,
+                twoPhaseCommit: true,
+                perTenantJobs: true,
+            },
+        });
+    }
+    if (fixture === "isolated-sqlite-rest-only") {
+        return validateAnswers({
+            name,
+            isolation: "isolated",
+            database: "sqlite",
+            capabilities: {
+                rest: true,
+                graphql: false,
+                ws: false,
+                sse: false,
+                sagas: false,
+                twoPhaseCommit: false,
+                perTenantJobs: false,
+            },
+        });
+    }
+    return validateAnswers({
+        name,
+        isolation: "sandboxed",
+        database: "none",
+        capabilities: {
+            rest: true,
+            graphql: false,
+            ws: false,
+            sse: false,
+            sagas: false,
+            twoPhaseCommit: false,
+            perTenantJobs: false,
+        },
+    });
+}

packages/api-stack/api/create-suaveplan-plugin/src/prompt/prompt.types.ts

@@ -0,0 +1,28 @@
+/**
+ * Public prompt-answer surface for the create-suaveplan-plugin scaffold.
+ *
+ * Every union member is exhaustive — adding a new isolation tier or
+ * database engine is a breaking change that must propagate through the
+ * generator + template set at the same time.
+ */
+
+export type IsolationTier = "trusted" | "isolated" | "sandboxed";
+
+export type DatabaseEngine = "postgres" | "sqlite" | "surrealdb" | "none";
+
+export interface CapabilitySelection {
+    readonly rest: boolean;
+    readonly graphql: boolean;
+    readonly ws: boolean;
+    readonly sse: boolean;
+    readonly sagas: boolean;
+    readonly twoPhaseCommit: boolean;
+    readonly perTenantJobs: boolean;
+}
+
+export interface PromptAnswers {
+    readonly name: string;
+    readonly isolation: IsolationTier;
+    readonly database: DatabaseEngine;
+    readonly capabilities: CapabilitySelection;
+}

packages/api-stack/api/create-suaveplan-plugin/src/templates/index.ts

@@ -0,0 +1 @@
+export { renderTree } from "./templates.js";

packages/api-stack/api/create-suaveplan-plugin/src/templates/templates.md

@@ -0,0 +1,81 @@
+# templates
+
+<!-- begin:auto-docs -->
+_(no submodules)_
+<!-- end:auto-docs -->
+
+## Purpose
+
+This module owns the per-file render functions that produce the
+scaffolded plugin tree. Every output file (manifest, source, tests,
+configs, migrations, README, package.json, tsconfig, .gitignore) lives
+here as a typed string-producer keyed off the validated `PromptAnswers`.
+Keeping the templates in TypeScript (not as opaque `.tmpl` files) means
+the type system can refuse a render that references a capability the
+prompt vocabulary doesn't know about.
+
+## Features
+
+- One `renderTree(answers)` entrypoint returning the ordered file list.
+- Per-capability handler stubs in `src/index.ts.tmpl` so generated test
+  files compile against real handler exports on first run.
+- Conditional emission of integration test + integration vitest config
+  + migrations when a DB engine other than `none` is selected.
+- Generated `vitest.config.ts` always wires `@suaveplan/testing/config`
+  (the `createTestConfig` factory, never `baseVitestConfig`+`mergeConfig`).
+
+## Usage
+
+### Basic example
+
+```ts
+import { renderTree, answersForFixture } from "create-suaveplan-plugin";
+
+const files = renderTree(
+    answersForFixture("sandboxed-none-rest-only", "demo"),
+);
+for (const f of files) console.log(f.path);
+```
+
+### Advanced example
+
+```ts
+import { renderTree, validateAnswers } from "create-suaveplan-plugin";
+
+const files = renderTree(
+    validateAnswers({
+        name: "billing",
+        isolation: "trusted",
+        database: "postgres",
+        capabilities: {
+            rest: true,
+            graphql: true,
+            ws: true,
+            sse: true,
+            sagas: true,
+            twoPhaseCommit: true,
+            perTenantJobs: true,
+        },
+    }),
+);
+const migration = files.find((f) =>
+    f.path === "migrations/postgres/0001-init.sql",
+);
+```
+
+## API Reference
+
+- `renderTree(answers: PromptAnswers): readonly GeneratedFile[]` —
+  deterministic, ordered file list.
+
+## Implementation Notes
+
+- Path order is stable, which the snapshot tests depend on; do not
+  reorder file emission when adding new templates.
+- Every emitted file ends with a trailing newline so they round-trip
+  through editors that auto-append one.
+- The generated `package.json` declares no external runtime deps so
+  `bun test` against the produced tree works without `bun install`
+  resolving anything.
+- Integration tests use `vitest` rather than `bun:test` since real
+  testcontainer fixtures are vitest-native.

packages/api-stack/api/create-suaveplan-plugin/src/templates/templates.test.ts

@@ -0,0 +1,131 @@
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { answersForFixture, validateAnswers } from "../prompt/prompt.js";
+import { renderTree } from "./templates.js";
+
+describe("renderTree", () => {
+    it("emits full capability handlers for trusted-postgres-full", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo")
+        );
+        const idx = files.find((f) => f.path === "src/index.ts");
+        expect(idx).toBeDefined();
+        expect(idx?.content.includes("rest:")).toBe(true);
+        expect(idx?.content.includes("graphql:")).toBe(true);
+        expect(idx?.content.includes("twoPhaseCommit:")).toBe(true);
+    });
+
+    it("emits sqlite migration body", { timeout: 5000 }, () => {
+        const files = renderTree(
+            answersForFixture("isolated-sqlite-rest-only", "demo-plugin")
+        );
+        const mig = files.find(
+            (f) => f.path === "migrations/sqlite/0001-init.sql"
+        );
+        expect(mig?.content.includes("datetime('now')")).toBe(true);
+    });
+
+    it("emits surrealdb migration body for surrealdb", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            validateAnswers({
+                name: "demo",
+                isolation: "trusted",
+                database: "surrealdb",
+                capabilities: {
+                    rest: true,
+                    graphql: false,
+                    ws: false,
+                    sse: false,
+                    sagas: false,
+                    twoPhaseCommit: false,
+                    perTenantJobs: false,
+                },
+            })
+        );
+        const mig = files.find(
+            (f) => f.path === "migrations/surrealdb/0001-init.sql"
+        );
+        expect(mig?.content.includes("DEFINE TABLE")).toBe(true);
+    });
+
+    it("generates integration test wired to testing-integration-postgres", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo")
+        );
+        const it_ = files.find(
+            (f) => f.path === "tests/integration/example.integration.test.ts"
+        );
+        expect(
+            it_?.content.includes("@suaveplan/testing-integration-postgres")
+        ).toBe(true);
+        expect(it_?.content.includes("INTEGRATION")).toBe(true);
+    });
+
+    it("shows _(none)_ in README when no capabilities selected", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            validateAnswers({
+                name: "blank",
+                isolation: "sandboxed",
+                database: "none",
+                capabilities: {
+                    rest: false,
+                    graphql: false,
+                    ws: false,
+                    sse: false,
+                    sagas: false,
+                    twoPhaseCommit: false,
+                    perTenantJobs: false,
+                },
+            })
+        );
+        const readme = files.find((f) => f.path === "README.md");
+        expect(readme?.content.includes("_(none)_")).toBe(true);
+    });
+
+    it("package.json includes test:integration when DB selected", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("isolated-sqlite-rest-only", "demo")
+        );
+        const pkg = files.find((f) => f.path === "package.json");
+        expect(pkg?.content.includes("test:integration")).toBe(true);
+    });
+
+    it("package.json omits test:integration when no DB", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("sandboxed-none-rest-only", "demo")
+        );
+        const pkg = files.find((f) => f.path === "package.json");
+        expect(pkg?.content.includes("test:integration")).toBe(false);
+    });
+
+    it("every emitted file content ends with a newline", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo")
+        );
+        for (const f of files) {
+            expect(f.content.endsWith("\n")).toBe(true);
+        }
+    });
+
+    it("vitest config uses createTestConfig", { timeout: 5000 }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo")
+        );
+        const cfg = files.find((f) => f.path === "vitest.config.ts");
+        expect(cfg?.content.includes("createTestConfig")).toBe(true);
+        expect(cfg?.content.includes("baseVitestConfig")).toBe(false);
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/src/templates/templates.ts

@@ -0,0 +1,277 @@
+import type { GeneratedFile } from "../generator/generator.types.js";
+import type { PromptAnswers } from "../prompt/prompt.types.js";
+
+const NEWLINE = "\n";
+
+function joinLines(parts: readonly string[]): string {
+    return `${parts.join(NEWLINE)}${NEWLINE}`;
+}
+
+function selectedCapabilityList(a: PromptAnswers): readonly string[] {
+    const out: string[] = [];
+    if (a.capabilities.rest) out.push("rest");
+    if (a.capabilities.graphql) out.push("graphql");
+    if (a.capabilities.ws) out.push("ws");
+    if (a.capabilities.sse) out.push("sse");
+    if (a.capabilities.sagas) out.push("sagas");
+    if (a.capabilities.twoPhaseCommit) out.push("twoPhaseCommit");
+    if (a.capabilities.perTenantJobs) out.push("perTenantJobs");
+    return out;
+}
+
+function renderPluginJson(a: PromptAnswers): string {
+    const caps = selectedCapabilityList(a);
+    const manifest = {
+        name: a.name,
+        version: "0.0.0",
+        isolation: a.isolation,
+        database: a.database,
+        capabilities: caps,
+    };
+    return `${JSON.stringify(manifest, null, 4)}${NEWLINE}`;
+}
+
+function renderSrcIndex(a: PromptAnswers): string {
+    const caps = selectedCapabilityList(a);
+    const handlerStubs = caps
+        .map(
+            (c) =>
+                `    ${c}: async () => ({ ok: true as const, capability: "${c}" }),`
+        )
+        .join(NEWLINE);
+    return joinLines([
+        "// Generated by create-suaveplan-plugin.",
+        "// Replace the body below with the real plugin implementation.",
+        "",
+        "export interface PluginManifest {",
+        "    readonly name: string;",
+        `    readonly isolation: "${a.isolation}";`,
+        `    readonly database: "${a.database}";`,
+        "    readonly capabilities: readonly string[];",
+        "}",
+        "",
+        "export const manifest: PluginManifest = Object.freeze({",
+        `    name: "${a.name}",`,
+        `    isolation: "${a.isolation}",`,
+        `    database: "${a.database}",`,
+        `    capabilities: Object.freeze([${caps.map((c) => `"${c}"`).join(", ")}]),`,
+        "});",
+        "",
+        "export const handlers = Object.freeze({",
+        handlerStubs,
+        "});",
+    ]);
+}
+
+function renderSrcIndexTest(a: PromptAnswers): string {
+    const caps = selectedCapabilityList(a);
+    const lines: string[] = [
+        `import { describe, expect, it } from "bun:test";`,
+        `import { handlers, manifest } from "./index.ts";`,
+        "",
+        `describe("${a.name} — scaffold smoke", () => {`,
+        `    it("manifest reports the configured isolation tier", () => {`,
+        `        expect(manifest.isolation).toBe("${a.isolation}");`,
+        "    });",
+        `    it("manifest reports the configured database engine", () => {`,
+        `        expect(manifest.database).toBe("${a.database}");`,
+        "    });",
+    ];
+    for (const c of caps) {
+        lines.push(
+            `    it("wires the ${c} capability", async () => {`,
+            `        const out = await handlers.${c}();`,
+            "        expect(out.ok).toBe(true);",
+            `        expect(out.capability).toBe("${c}");`,
+            "    });"
+        );
+    }
+    lines.push("});");
+    return joinLines(lines);
+}
+
+function renderVitestConfig(): string {
+    return joinLines([
+        `import { createTestConfig } from "@suaveplan/testing/config";`,
+        "",
+        "export default createTestConfig({});",
+    ]);
+}
+
+function renderVitestIntegrationConfig(): string {
+    return joinLines([
+        `import { createTestConfig } from "@suaveplan/testing/config";`,
+        "",
+        "export default createTestConfig({",
+        `    additionalIncludes: ["tests/integration/**/*.integration.test.ts"],`,
+        "    testTimeout: 60_000,",
+        "});",
+    ]);
+}
+
+function integrationImport(
+    engine: "postgres" | "sqlite" | "surrealdb"
+): string {
+    return `@suaveplan/testing-integration-${engine}`;
+}
+
+function renderIntegrationTest(
+    a: PromptAnswers,
+    engine: "postgres" | "sqlite" | "surrealdb"
+): string {
+    const importPath = integrationImport(engine);
+    const fixtureName =
+        engine === "postgres"
+            ? "Postgres"
+            : engine === "sqlite"
+              ? "Sqlite"
+              : "SurrealDb";
+    return joinLines([
+        `import { describe, expect, it } from "vitest";`,
+        `// Real-service fixture from ${importPath}.`,
+        `// import { create${fixtureName}Fixture } from "${importPath}";`,
+        "",
+        `const enabled = process.env["INTEGRATION"] === "1";`,
+        "",
+        `(enabled ? describe : describe.skip)("${a.name} — integration", () => {`,
+        `    it("placeholder — replace with a real-service assertion", () => {`,
+        "        expect(true).toBe(true);",
+        "    });",
+        "});",
+    ]);
+}
+
+function renderMigration(a: PromptAnswers): string {
+    if (a.database === "postgres") {
+        return joinLines([
+            `-- 0001 — initial schema for ${a.name}`,
+            `CREATE TABLE IF NOT EXISTS ${a.name.replace(/-/g, "_")}_state (`,
+            "    id          TEXT PRIMARY KEY,",
+            "    created_at  TIMESTAMPTZ NOT NULL DEFAULT now()",
+            ");",
+        ]);
+    }
+    if (a.database === "sqlite") {
+        return joinLines([
+            `-- 0001 — initial schema for ${a.name}`,
+            `CREATE TABLE IF NOT EXISTS ${a.name.replace(/-/g, "_")}_state (`,
+            "    id          TEXT PRIMARY KEY,",
+            `    created_at  TEXT NOT NULL DEFAULT (datetime('now'))`,
+            ");",
+        ]);
+    }
+    return joinLines([
+        `-- 0001 — initial schema for ${a.name}`,
+        `DEFINE TABLE ${a.name.replace(/-/g, "_")}_state SCHEMAFULL;`,
+        `DEFINE FIELD created_at ON ${a.name.replace(/-/g, "_")}_state TYPE datetime DEFAULT time::now();`,
+    ]);
+}
+
+function renderPackageJson(a: PromptAnswers): string {
+    const scripts: Record<string, string> = {
+        test: "bun test",
+        "test:coverage": "bun test --coverage",
+        lint: "bunx biome check src/",
+        typecheck: "bunx tsc --noEmit",
+        build: "echo 'configure your build pipeline here'",
+    };
+    if (a.database !== "none") {
+        scripts["test:integration"] =
+            "vitest run -c vitest.integration.config.ts";
+    }
+    const pkg = {
+        name: a.name,
+        version: "0.0.0",
+        type: "module",
+        private: true,
+        scripts,
+    };
+    return `${JSON.stringify(pkg, null, 4)}${NEWLINE}`;
+}
+
+function renderTsConfig(): string {
+    return joinLines([
+        "{",
+        `    "$schema": "https://json.schemastore.org/tsconfig",`,
+        `    "compilerOptions": {`,
+        `        "target": "ES2022",`,
+        `        "module": "ESNext",`,
+        `        "moduleResolution": "bundler",`,
+        `        "strict": true,`,
+        `        "noUncheckedIndexedAccess": true,`,
+        `        "verbatimModuleSyntax": true,`,
+        `        "isolatedModules": true,`,
+        `        "esModuleInterop": true,`,
+        `        "skipLibCheck": true,`,
+        `        "types": ["bun-types"]`,
+        "    },",
+        `    "include": ["src/**/*.ts", "tests/**/*.ts"]`,
+        "}",
+    ]);
+}
+
+function renderGitignore(): string {
+    return joinLines([
+        "node_modules/",
+        "dist/",
+        "coverage/",
+        "*.log",
+        ".DS_Store",
+    ]);
+}
+
+function renderReadme(a: PromptAnswers): string {
+    const caps = selectedCapabilityList(a);
+    return joinLines([
+        `# ${a.name}`,
+        "",
+        "Suaveplan API plugin generated by `create-suaveplan-plugin`.",
+        "",
+        `- **Isolation**: \`${a.isolation}\``,
+        `- **Database**: \`${a.database}\``,
+        `- **Capabilities**: ${caps.length === 0 ? "_(none)_" : caps.map((c) => `\`${c}\``).join(", ")}`,
+        "",
+        "## Getting started",
+        "",
+        "```bash",
+        "bun install",
+        "bun test",
+        "```",
+        "",
+        "Replace the stub handlers in `src/index.ts` with the real plugin implementation.",
+    ]);
+}
+
+/**
+ * Render every file in the scaffold tree for the supplied prompt-answer
+ * set. The returned list is deterministic — callers can rely on path
+ * order for snapshot comparisons.
+ */
+export function renderTree(a: PromptAnswers): readonly GeneratedFile[] {
+    const files: GeneratedFile[] = [
+        { path: "plugin.json", content: renderPluginJson(a) },
+        { path: "src/index.ts", content: renderSrcIndex(a) },
+        { path: "src/index.test.ts", content: renderSrcIndexTest(a) },
+        { path: "vitest.config.ts", content: renderVitestConfig() },
+        { path: "README.md", content: renderReadme(a) },
+        { path: "package.json", content: renderPackageJson(a) },
+        { path: "tsconfig.json", content: renderTsConfig() },
+        { path: ".gitignore", content: renderGitignore() },
+    ];
+    const engine = a.database;
+    if (engine !== "none") {
+        files.push({
+            path: "vitest.integration.config.ts",
+            content: renderVitestIntegrationConfig(),
+        });
+        files.push({
+            path: "tests/integration/example.integration.test.ts",
+            content: renderIntegrationTest(a, engine),
+        });
+        files.push({
+            path: `migrations/${engine}/0001-init.sql`,
+            content: renderMigration(a),
+        });
+    }
+    return files;
+}

packages/api-stack/api/create-suaveplan-plugin/tests/dep-graph.test.ts

@@ -0,0 +1,26 @@
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import { describe, expect, it } from "@suaveplan/testing/runner";
+
+const PKG_DIR = join(import.meta.dirname, "..");
+
+describe("dep-graph", () => {
+    it("runtime deps stay minimal (error, tslib, zod only)", {
+        timeout: 5000,
+    }, () => {
+        const raw = JSON.parse(
+            readFileSync(join(PKG_DIR, "package.json"), "utf8")
+        ) as {
+            dependencies?: Record<string, string>;
+        };
+        const deps = Object.keys(raw.dependencies ?? {}).sort();
+        expect(deps).toEqual(["@suaveplan/error", "tslib", "zod"]);
+    });
+
+    it("declares a single bin entry", { timeout: 5000 }, () => {
+        const raw = JSON.parse(
+            readFileSync(join(PKG_DIR, "package.json"), "utf8")
+        ) as { bin?: Record<string, string> };
+        expect(Object.keys(raw.bin ?? {})).toEqual(["create-suaveplan-plugin"]);
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/runs-bun-test.test.ts

@@ -0,0 +1,45 @@
+import { spawnSync } from "node:child_process";
+import { mkdtempSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { scaffold } from "../../src/generator/generator.js";
+import { answersForFixture } from "../../src/prompt/prompt.js";
+
+type Fixture =
+    | "trusted-postgres-full"
+    | "isolated-sqlite-rest-only"
+    | "sandboxed-none-rest-only";
+
+const FIXTURES: readonly Fixture[] = [
+    "trusted-postgres-full",
+    "isolated-sqlite-rest-only",
+    "sandboxed-none-rest-only",
+] as const;
+
+describe("scaffold-output: every fixture passes bun test on first run", () => {
+    for (const fixture of FIXTURES) {
+        it(`every fixture passes bun test on first run :: ${fixture}`, {
+            timeout: 30000,
+        }, () => {
+            const root = mkdtempSync(join(tmpdir(), `cspp-bun-${fixture}-`));
+            try {
+                const answers = answersForFixture(fixture, "demo-plugin");
+                scaffold({ answers, targetDir: root, force: true });
+                const result = spawnSync("bun", ["test"], {
+                    cwd: root,
+                    encoding: "utf8",
+                    env: { ...process.env, INTEGRATION: "0" },
+                });
+                if (result.status !== 0) {
+                    // Surface output to ease debugging when the gate flips.
+                    // eslint-disable-next-line no-console
+                    console.error(result.stdout, result.stderr);
+                }
+                expect(result.status).toBe(0);
+            } finally {
+                rmSync(root, { recursive: true, force: true });
+            }
+        });
+    }
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/scaffold-output.test.ts

@@ -0,0 +1,128 @@
+import {
+    existsSync,
+    mkdtempSync,
+    readFileSync,
+    rmSync,
+    statSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { describe, expect, it } from "@suaveplan/testing/runner";
+import { SCAFFOLD_CODES, ScaffoldError } from "../../src/error-codes.js";
+import { scaffold } from "../../src/generator/generator.js";
+import { answersForFixture } from "../../src/prompt/prompt.js";
+import { renderTree } from "../../src/templates/templates.js";
+
+const FIXTURE_BY_DIR: Record<
+    string,
+    | "trusted-postgres-full"
+    | "isolated-sqlite-rest-only"
+    | "sandboxed-none-rest-only"
+> = {
+    "trusted-postgres-full": "trusted-postgres-full",
+    "isolated-sqlite-rest-only": "isolated-sqlite-rest-only",
+    "sandboxed-none-rest-only": "sandboxed-none-rest-only",
+};
+
+const SNAPSHOT_ROOT = join(import.meta.dirname, "snapshots");
+
+function makeTmp(prefix: string): string {
+    return mkdtempSync(join(tmpdir(), `${prefix}-`));
+}
+
+function readSnapshot(fixtureDir: string, relPath: string): string {
+    return readFileSync(join(SNAPSHOT_ROOT, fixtureDir, relPath), "utf8");
+}
+
+for (const [snapshotDir, fixture] of Object.entries(FIXTURE_BY_DIR)) {
+    describe(`scaffold-output: ${snapshotDir}`, () => {
+        it(`${snapshotDir} snapshot match`, { timeout: 30000 }, () => {
+            const files = renderTree(answersForFixture(fixture, "demo-plugin"));
+            for (const f of files) {
+                const expected = readSnapshot(snapshotDir, f.path);
+                expect(f.content).toBe(expected);
+            }
+        });
+    });
+}
+
+describe("scaffold-output: sandboxed-none-rest-only emits no integration / migrations", () => {
+    it("directories omitted when DB is none", { timeout: 5000 }, () => {
+        const files = renderTree(
+            answersForFixture("sandboxed-none-rest-only", "demo-plugin")
+        );
+        expect(files.some((f) => f.path.startsWith("tests/integration"))).toBe(
+            false
+        );
+        expect(files.some((f) => f.path.startsWith("migrations/"))).toBe(false);
+    });
+});
+
+describe("scaffold-output: vitest configs use createTestConfig", () => {
+    it("generated vitest configs use createTestConfig", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo-plugin")
+        );
+        const cfg = files.find((f) => f.path === "vitest.config.ts");
+        expect(cfg?.content.includes("@suaveplan/testing/config")).toBe(true);
+        expect(cfg?.content.includes("createTestConfig")).toBe(true);
+        expect(cfg?.content.includes("baseVitestConfig")).toBe(false);
+        const cfgI = files.find(
+            (f) => f.path === "vitest.integration.config.ts"
+        );
+        expect(cfgI?.content.includes("createTestConfig")).toBe(true);
+    });
+});
+
+describe("scaffold-output: postgres selection wires testing-integration-postgres", () => {
+    it("postgres selection wires testing-integration-postgres", {
+        timeout: 5000,
+    }, () => {
+        const files = renderTree(
+            answersForFixture("trusted-postgres-full", "demo-plugin")
+        );
+        const it_ = files.find(
+            (f) => f.path === "tests/integration/example.integration.test.ts"
+        );
+        expect(
+            it_?.content.includes("@suaveplan/testing-integration-postgres")
+        ).toBe(true);
+        expect(it_?.content.includes("INTEGRATION")).toBe(true);
+    });
+});
+
+describe("scaffold-output: pre-existing directory refuses without force", () => {
+    it("pre-existing directory raises without force", { timeout: 5000 }, () => {
+        const root = makeTmp("scaffold-out-exists");
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        // First write succeeds.
+        scaffold({ answers, targetDir: root, force: true });
+        // Second write without --force raises.
+        try {
+            expect(() => scaffold({ answers, targetDir: root })).toThrowError(
+                ScaffoldError
+            );
+            try {
+                scaffold({ answers, targetDir: root });
+            } catch (err) {
+                expect((err as ScaffoldError).code).toBe(
+                    SCAFFOLD_CODES.DIRECTORY_EXISTS
+                );
+            }
+        } finally {
+            rmSync(root, { recursive: true, force: true });
+        }
+    });
+
+    it("--force overwrites prior files", { timeout: 5000 }, () => {
+        const root = makeTmp("scaffold-out-force");
+        const answers = answersForFixture("sandboxed-none-rest-only", "demo");
+        scaffold({ answers, targetDir: root, force: true });
+        scaffold({ answers, targetDir: root, force: true });
+        expect(existsSync(join(root, "plugin.json"))).toBe(true);
+        expect(statSync(join(root, "plugin.json")).isFile()).toBe(true);
+        rmSync(root, { recursive: true, force: true });
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/.gitignore

@@ -0,0 +1,5 @@
+node_modules/
+dist/
+coverage/
+*.log
+.DS_Store

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/README.md

@@ -0,0 +1,16 @@
+# demo-plugin
+
+Suaveplan API plugin generated by `create-suaveplan-plugin`.
+
+- **Isolation**: `isolated`
+- **Database**: `sqlite`
+- **Capabilities**: `rest`
+
+## Getting started
+
+```bash
+bun install
+bun test
+```
+
+Replace the stub handlers in `src/index.ts` with the real plugin implementation.

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/migrations/sqlite/0001-init.sql

@@ -0,0 +1,5 @@
+-- 0001 — initial schema for demo-plugin
+CREATE TABLE IF NOT EXISTS demo_plugin_state (
+    id          TEXT PRIMARY KEY,
+    created_at  TEXT NOT NULL DEFAULT (datetime('now'))
+);

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/package.json

@@ -0,0 +1,14 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "type": "module",
+    "private": true,
+    "scripts": {
+        "test": "bun test",
+        "test:coverage": "bun test --coverage",
+        "lint": "bunx biome check src/",
+        "typecheck": "bunx tsc --noEmit",
+        "build": "echo 'configure your build pipeline here'",
+        "test:integration": "vitest run -c vitest.integration.config.ts"
+    }
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/plugin.json

@@ -0,0 +1,9 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "isolation": "isolated",
+    "database": "sqlite",
+    "capabilities": [
+        "rest"
+    ]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/src/index.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it } from "bun:test";
+import { handlers, manifest } from "./index.ts";
+
+describe("demo-plugin — scaffold smoke", () => {
+    it("manifest reports the configured isolation tier", () => {
+        expect(manifest.isolation).toBe("isolated");
+    });
+    it("manifest reports the configured database engine", () => {
+        expect(manifest.database).toBe("sqlite");
+    });
+    it("wires the rest capability", async () => {
+        const out = await handlers.rest();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("rest");
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/src/index.ts

@@ -0,0 +1,20 @@
+// Generated by create-suaveplan-plugin.
+// Replace the body below with the real plugin implementation.
+
+export interface PluginManifest {
+    readonly name: string;
+    readonly isolation: "isolated";
+    readonly database: "sqlite";
+    readonly capabilities: readonly string[];
+}
+
+export const manifest: PluginManifest = Object.freeze({
+    name: "demo-plugin",
+    isolation: "isolated",
+    database: "sqlite",
+    capabilities: Object.freeze(["rest"]),
+});
+
+export const handlers = Object.freeze({
+    rest: async () => ({ ok: true as const, capability: "rest" }),
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/tests/integration/example.integration.test.ts

@@ -0,0 +1,11 @@
+import { describe, expect, it } from "vitest";
+// Real-service fixture from @suaveplan/testing-integration-sqlite.
+// import { createSqliteFixture } from "@suaveplan/testing-integration-sqlite";
+
+const enabled = process.env["INTEGRATION"] === "1";
+
+(enabled ? describe : describe.skip)("demo-plugin — integration", () => {
+    it("placeholder — replace with a real-service assertion", () => {
+        expect(true).toBe(true);
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/tsconfig.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "compilerOptions": {
+        "target": "ES2022",
+        "module": "ESNext",
+        "moduleResolution": "bundler",
+        "strict": true,
+        "noUncheckedIndexedAccess": true,
+        "verbatimModuleSyntax": true,
+        "isolatedModules": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "types": ["bun-types"]
+    },
+    "include": ["src/**/*.ts", "tests/**/*.ts"]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/vitest.config.ts

@@ -0,0 +1,3 @@
+import { createTestConfig } from "@suaveplan/testing/config";
+
+export default createTestConfig({});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/isolated-sqlite-rest-only/vitest.integration.config.ts

@@ -0,0 +1,6 @@
+import { createTestConfig } from "@suaveplan/testing/config";
+
+export default createTestConfig({
+    additionalIncludes: ["tests/integration/**/*.integration.test.ts"],
+    testTimeout: 60_000,
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/.gitignore

@@ -0,0 +1,5 @@
+node_modules/
+dist/
+coverage/
+*.log
+.DS_Store

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/README.md

@@ -0,0 +1,16 @@
+# demo-plugin
+
+Suaveplan API plugin generated by `create-suaveplan-plugin`.
+
+- **Isolation**: `sandboxed`
+- **Database**: `none`
+- **Capabilities**: `rest`
+
+## Getting started
+
+```bash
+bun install
+bun test
+```
+
+Replace the stub handlers in `src/index.ts` with the real plugin implementation.

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/package.json

@@ -0,0 +1,13 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "type": "module",
+    "private": true,
+    "scripts": {
+        "test": "bun test",
+        "test:coverage": "bun test --coverage",
+        "lint": "bunx biome check src/",
+        "typecheck": "bunx tsc --noEmit",
+        "build": "echo 'configure your build pipeline here'"
+    }
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/plugin.json

@@ -0,0 +1,9 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "isolation": "sandboxed",
+    "database": "none",
+    "capabilities": [
+        "rest"
+    ]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/src/index.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it } from "bun:test";
+import { handlers, manifest } from "./index.ts";
+
+describe("demo-plugin — scaffold smoke", () => {
+    it("manifest reports the configured isolation tier", () => {
+        expect(manifest.isolation).toBe("sandboxed");
+    });
+    it("manifest reports the configured database engine", () => {
+        expect(manifest.database).toBe("none");
+    });
+    it("wires the rest capability", async () => {
+        const out = await handlers.rest();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("rest");
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/src/index.ts

@@ -0,0 +1,20 @@
+// Generated by create-suaveplan-plugin.
+// Replace the body below with the real plugin implementation.
+
+export interface PluginManifest {
+    readonly name: string;
+    readonly isolation: "sandboxed";
+    readonly database: "none";
+    readonly capabilities: readonly string[];
+}
+
+export const manifest: PluginManifest = Object.freeze({
+    name: "demo-plugin",
+    isolation: "sandboxed",
+    database: "none",
+    capabilities: Object.freeze(["rest"]),
+});
+
+export const handlers = Object.freeze({
+    rest: async () => ({ ok: true as const, capability: "rest" }),
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/tsconfig.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "compilerOptions": {
+        "target": "ES2022",
+        "module": "ESNext",
+        "moduleResolution": "bundler",
+        "strict": true,
+        "noUncheckedIndexedAccess": true,
+        "verbatimModuleSyntax": true,
+        "isolatedModules": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "types": ["bun-types"]
+    },
+    "include": ["src/**/*.ts", "tests/**/*.ts"]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/sandboxed-none-rest-only/vitest.config.ts

@@ -0,0 +1,3 @@
+import { createTestConfig } from "@suaveplan/testing/config";
+
+export default createTestConfig({});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/.gitignore

@@ -0,0 +1,5 @@
+node_modules/
+dist/
+coverage/
+*.log
+.DS_Store

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/README.md

@@ -0,0 +1,16 @@
+# demo-plugin
+
+Suaveplan API plugin generated by `create-suaveplan-plugin`.
+
+- **Isolation**: `trusted`
+- **Database**: `postgres`
+- **Capabilities**: `rest`, `graphql`, `ws`, `sse`, `sagas`, `twoPhaseCommit`, `perTenantJobs`
+
+## Getting started
+
+```bash
+bun install
+bun test
+```
+
+Replace the stub handlers in `src/index.ts` with the real plugin implementation.

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/migrations/postgres/0001-init.sql

@@ -0,0 +1,5 @@
+-- 0001 — initial schema for demo-plugin
+CREATE TABLE IF NOT EXISTS demo_plugin_state (
+    id          TEXT PRIMARY KEY,
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT now()
+);

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/package.json

@@ -0,0 +1,14 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "type": "module",
+    "private": true,
+    "scripts": {
+        "test": "bun test",
+        "test:coverage": "bun test --coverage",
+        "lint": "bunx biome check src/",
+        "typecheck": "bunx tsc --noEmit",
+        "build": "echo 'configure your build pipeline here'",
+        "test:integration": "vitest run -c vitest.integration.config.ts"
+    }
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/plugin.json

@@ -0,0 +1,15 @@
+{
+    "name": "demo-plugin",
+    "version": "0.0.0",
+    "isolation": "trusted",
+    "database": "postgres",
+    "capabilities": [
+        "rest",
+        "graphql",
+        "ws",
+        "sse",
+        "sagas",
+        "twoPhaseCommit",
+        "perTenantJobs"
+    ]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/src/index.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, it } from "bun:test";
+import { handlers, manifest } from "./index.ts";
+
+describe("demo-plugin — scaffold smoke", () => {
+    it("manifest reports the configured isolation tier", () => {
+        expect(manifest.isolation).toBe("trusted");
+    });
+    it("manifest reports the configured database engine", () => {
+        expect(manifest.database).toBe("postgres");
+    });
+    it("wires the rest capability", async () => {
+        const out = await handlers.rest();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("rest");
+    });
+    it("wires the graphql capability", async () => {
+        const out = await handlers.graphql();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("graphql");
+    });
+    it("wires the ws capability", async () => {
+        const out = await handlers.ws();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("ws");
+    });
+    it("wires the sse capability", async () => {
+        const out = await handlers.sse();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("sse");
+    });
+    it("wires the sagas capability", async () => {
+        const out = await handlers.sagas();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("sagas");
+    });
+    it("wires the twoPhaseCommit capability", async () => {
+        const out = await handlers.twoPhaseCommit();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("twoPhaseCommit");
+    });
+    it("wires the perTenantJobs capability", async () => {
+        const out = await handlers.perTenantJobs();
+        expect(out.ok).toBe(true);
+        expect(out.capability).toBe("perTenantJobs");
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/src/index.ts

@@ -0,0 +1,26 @@
+// Generated by create-suaveplan-plugin.
+// Replace the body below with the real plugin implementation.
+
+export interface PluginManifest {
+    readonly name: string;
+    readonly isolation: "trusted";
+    readonly database: "postgres";
+    readonly capabilities: readonly string[];
+}
+
+export const manifest: PluginManifest = Object.freeze({
+    name: "demo-plugin",
+    isolation: "trusted",
+    database: "postgres",
+    capabilities: Object.freeze(["rest", "graphql", "ws", "sse", "sagas", "twoPhaseCommit", "perTenantJobs"]),
+});
+
+export const handlers = Object.freeze({
+    rest: async () => ({ ok: true as const, capability: "rest" }),
+    graphql: async () => ({ ok: true as const, capability: "graphql" }),
+    ws: async () => ({ ok: true as const, capability: "ws" }),
+    sse: async () => ({ ok: true as const, capability: "sse" }),
+    sagas: async () => ({ ok: true as const, capability: "sagas" }),
+    twoPhaseCommit: async () => ({ ok: true as const, capability: "twoPhaseCommit" }),
+    perTenantJobs: async () => ({ ok: true as const, capability: "perTenantJobs" }),
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/tests/integration/example.integration.test.ts

@@ -0,0 +1,11 @@
+import { describe, expect, it } from "vitest";
+// Real-service fixture from @suaveplan/testing-integration-postgres.
+// import { createPostgresFixture } from "@suaveplan/testing-integration-postgres";
+
+const enabled = process.env["INTEGRATION"] === "1";
+
+(enabled ? describe : describe.skip)("demo-plugin — integration", () => {
+    it("placeholder — replace with a real-service assertion", () => {
+        expect(true).toBe(true);
+    });
+});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/tsconfig.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "compilerOptions": {
+        "target": "ES2022",
+        "module": "ESNext",
+        "moduleResolution": "bundler",
+        "strict": true,
+        "noUncheckedIndexedAccess": true,
+        "verbatimModuleSyntax": true,
+        "isolatedModules": true,
+        "esModuleInterop": true,
+        "skipLibCheck": true,
+        "types": ["bun-types"]
+    },
+    "include": ["src/**/*.ts", "tests/**/*.ts"]
+}

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/vitest.config.ts

@@ -0,0 +1,3 @@
+import { createTestConfig } from "@suaveplan/testing/config";
+
+export default createTestConfig({});

packages/api-stack/api/create-suaveplan-plugin/tests/scaffold-output/snapshots/trusted-postgres-full/vitest.integration.config.ts

@@ -0,0 +1,6 @@
+import { createTestConfig } from "@suaveplan/testing/config";
+
+export default createTestConfig({
+    additionalIncludes: ["tests/integration/**/*.integration.test.ts"],
+    testTimeout: 60_000,
+});

packages/api-stack/api/create-suaveplan-plugin/tsconfig.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "extends": "../../../../tsconfig.base.json",
+    "compilerOptions": {
+        "rootDir": ".",
+        "outDir": "./dist",
+        "lib": ["ES2022"],
+        "types": ["node"]
+    },
+    "include": ["src/**/*.ts", "tests/**/*.ts"],
+    "exclude": [
+        "dist",
+        "node_modules",
+        "tests/scaffold-output/snapshots/**"
+    ]
+}

packages/api-stack/api/create-suaveplan-plugin/tsconfig.lib.json

@@ -0,0 +1,12 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "extends": "../../../../tsconfig.base.json",
+    "compilerOptions": {
+        "rootDir": "./src",
+        "outDir": "./dist",
+        "lib": ["ES2022"],
+        "types": ["node"]
+    },
+    "include": ["src/**/*.ts"],
+    "exclude": ["src/**/*.test.ts", "dist", "node_modules"]
+}

packages/api-stack/api/create-suaveplan-plugin/vite.config.ts

@@ -0,0 +1,37 @@
+import { defineConfig } from "vite";
+import dts from "vite-plugin-dts";
+
+export default defineConfig({
+    root: __dirname,
+    cacheDir: "../../../../node_modules/.vite/packages/create-suaveplan-plugin",
+    plugins: [
+        dts({
+            entryRoot: "src",
+            tsconfigPath: "./tsconfig.lib.json",
+            insertTypesEntry: true,
+        }),
+    ],
+    build: {
+        outDir: "./dist",
+        emptyOutDir: true,
+        reportCompressedSize: true,
+        sourcemap: true,
+        lib: {
+            entry: {
+                index: "src/index.ts",
+                "bin/create-suaveplan-plugin":
+                    "src/bin/create-suaveplan-plugin.ts",
+            },
+            formats: ["es"],
+        },
+        rollupOptions: {
+            treeshake: true,
+            output: {
+                preserveModules: true,
+                preserveModulesRoot: "src",
+                entryFileNames: "[name].js",
+            },
+            external: [/^@suaveplan\//, /^node:/, "tslib", "zod"],
+        },
+    },
+});

packages/api-stack/api/create-suaveplan-plugin/vitest.config.ts

@@ -0,0 +1,35 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+    test: {
+        globals: false,
+        environment: "node",
+        pool: "forks",
+        include: ["src/**/*.test.ts", "tests/**/*.test.ts"],
+        exclude: [
+            "dist/**",
+            "node_modules/**",
+            "tests/scaffold-output/snapshots/**",
+        ],
+        coverage: {
+            provider: "istanbul",
+            reporter: ["text", "html", "lcov"],
+            include: ["src/**/*.ts"],
+            exclude: [
+                "src/**/*.test.ts",
+                "src/**/*.types.ts",
+                "src/**/index.ts",
+                "src/index.ts",
+                "src/bin/**",
+                "tests/**",
+            ],
+            thresholds: {
+                statements: 100,
+                branches: 100,
+                functions: 100,
+                lines: 100,
+            },
+        },
+        testTimeout: 30000,
+    },
+});