diff --git a/docs/architecture/sqlite-coupling-inventory.md b/docs/architecture/sqlite-coupling-inventory.md
new file mode 100644
index 0000000000..1c1d9d48c3
--- /dev/null
+++ b/docs/architecture/sqlite-coupling-inventory.md
@@ -0,0 +1,226 @@
+---
+title: "SQLite coupling inventory"
+status: measured-snapshot
+lastUpdated: 2026-07-23
+---
+
+# SQLite coupling inventory
+
+- **Tracking issue:** [#8075](https://github.com/diegosouzapw/OmniRoute/issues/8075)
+- **Snapshot revision:** `9a3b605f3420ae3ab08bd93d6443034f03a1bcbc`
+- **Scanned-corpus SHA-256:** `72334620a7a18a42bcede1643fb2fdf95da6eae9ffa66a891ae14ed633ad43f6`
+- **Purpose:** Measure the current persistence cut lines before proposing repository interfaces
+- **Runtime impact:** None; this document and its audit script do not change database behavior
+
+## How to reproduce
+
+From the repository root:
+
+```bash
+node scripts/check/audit-sqlite-coupling.mjs
+node scripts/check/audit-sqlite-coupling.mjs --json
+node --test scripts/check/audit-sqlite-coupling.test.mjs
+```
+
+The script reads tracked files from Git, scans non-test source under `src/`, `open-sse/`,
+`electron/`, and `bin/`, and scans migration SQL under `src/lib/db/migrations/`. It excludes the
+top-level test tree, co-located test directories, test/spec source files, and paths outside those
+configured source roots (including documentation and scripts).
+
+The script refuses to run if tracked files in those source roots differ from `HEAD`. It reports
+both the audit-tool revision and a SHA-256 over the ordered path/content corpus. The snapshot above
+was taken from the listed source revision; this PR changes only excluded documentation and script
+paths, so rerunning from the clean PR branch produces the same corpus digest.
+
+This is a **lexical inventory**, not a TypeScript or SQL semantic analysis:
+
+- counts are occurrences of defined patterns, not counts of distinct SQL statements;
+- adapter-call and direct-singleton patterns mask comments and literal contents first;
+- template-literal contents, including embedded expressions, are excluded from those code-syntax
+  counts;
+- the lightweight masker is not a JavaScript parser, so unusual regular-expression literal syntax
+  can still require manual review;
+- comments and string literals can contribute to dialect-signal counts, which intentionally search
+  raw text for embedded SQL;
+- a `.prepare()` match outside `src/lib/db/` is a review lead, not proof that the call should move;
+- calls hidden behind a differently named wrapper may not be counted;
+- file counts are deduplicated, while occurrence counts are not.
+
+The JSON output includes every matching path so reviewers can inspect or reclassify individual
+results rather than trusting totals alone.
+
+## Snapshot scope
+
+At the recorded revision, the script scanned:
+
+- 3,830 tracked non-test source files;
+- 129 migration SQL files.
+
+The source-file count is intentionally broad because the goal is to find persistence coupling that
+has escaped the nominal database directory, including CLI and proxy/runtime code.
+
+## Boundary signals
+
+| Signal                                                                           | Files | Occurrences |
+| -------------------------------------------------------------------------------- | ----: | ----------: |
+| Direct `getDbInstance()` call syntax outside comments/literals and `src/lib/db/` |    45 |         150 |
+| `localDb` import consumers                                                       |   211 |           — |
+| `SqliteAdapter` type consumers outside comments/literals and `src/lib/db/`       |     3 |           — |
+
+The `localDb` barrel already gives many callers a domain-function seam, but
+`src/lib/localDb.ts` remains a re-export layer rather than a backend contract. The 45 direct
+singleton consumers are the clearest first review set because they bypass that logical seam and
+hold an adapter-shaped handle directly.
+
+The three non-test source files outside `src/lib/db/` that mention the `SqliteAdapter` type in code
+syntax are:
+
+- `src/app/api/db-backups/import/route.ts`;
+- `src/lib/compliance/index.ts`;
+- `src/lib/compliance/noLog.ts`.
+
+These are not equivalent migration tasks. Backup import is capability-specific; compliance
+persistence may be portable domain state. The future boundary should classify them rather than
+moving all three mechanically.
+
+## Adapter-shaped call syntax
+
+| Signal            | Occurrences | Files | Outside `src/lib/db/` occurrences | Outside files |
+| ----------------- | ----------: | ----: | --------------------------------: | ------------: |
+| `.prepare()`      |       1,219 |   163 |                               252 |            52 |
+| `.transaction()`  |          62 |    40 |                                12 |            10 |
+| `.immediate()`    |           3 |     3 |                                 0 |             0 |
+| `.pragma()`       |          39 |    11 |                                 6 |             4 |
+| `.backup()`       |           6 |     5 |                                 3 |             3 |
+| `.checkpoint()`   |           0 |     0 |                                 0 |             0 |
+| `lastInsertRowid` |          15 |     7 |                                 1 |             1 |
+
+This table shows why `SqliteAdapter` is a SQLite runtime compatibility layer rather than a portable
+backend abstraction. Its synchronous statement and transaction shape is widely used, and some of
+that shape is visible outside the nominal database layer.
+
+The top direct `getDbInstance()` consumers outside `src/lib/db/` at this revision are:
+
+| File                                               | Occurrences |
+| -------------------------------------------------- | ----------: |
+| `src/lib/proxySubscription/subscriptionService.ts` |          12 |
+| `src/lib/semanticCache.ts`                         |          10 |
+| `src/lib/usage/callLogs.ts`                        |           9 |
+| `src/lib/cloudAgent/db.ts`                         |           8 |
+| `src/lib/memory/store.ts`                          |           8 |
+| `src/lib/memory/vectorStore.ts`                    |           8 |
+| `src/lib/modelsDevSync.ts`                         |           8 |
+| `src/lib/gamification/badges.ts`                   |           5 |
+| `src/lib/memory/retrieval.ts`                      |           5 |
+| `src/lib/pricingSync.ts`                           |           5 |
+| `src/lib/skills/registry.ts`                       |           5 |
+| `src/lib/usage/usageHistory.ts`                    |           5 |
+
+The list spans control-plane configuration, usage/audit data, cache, memory/vector search, skills,
+gamification, and CLI/provider support. A single generic SQL adapter would preserve this spread;
+domain repositories provide a way to reduce it slice by slice.
+
+## SQLite dialect and lifecycle signals
+
+| Signal                | Occurrences | Files |
+| --------------------- | ----------: | ----: |
+| `PRAGMA` text         |          97 |    41 |
+| `sqlite_master`       |          14 |    11 |
+| `BEGIN IMMEDIATE`     |           2 |     2 |
+| `INSERT OR REPLACE`   |          83 |    45 |
+| `AUTOINCREMENT`       |          34 |    24 |
+| `datetime('now')`     |         171 |    68 |
+| `VACUUM`              |          39 |    10 |
+| `wal_checkpoint`      |          13 |     7 |
+| `fts5`                |          43 |     8 |
+| `vec0`                |           7 |     1 |
+| `last_insert_rowid()` |           1 |     1 |
+
+These values are text signals and include comments where present. They are useful for locating
+portability work, not for estimating implementation effort by multiplication.
+
+Verified high-coupling areas include:
+
+- `src/lib/db/core.ts`: singleton lifecycle, SQLite file paths, WAL checkpoint, recovery, schema,
+  compaction, and backup creation;
+- `src/lib/db/migrationRunner.ts`: numbered SQL migration execution, `sqlite_master`,
+  `PRAGMA table_info`, transaction behavior, and optional FTS5 handling;
+- `src/lib/db/optimizationSettings.ts`: page/cache settings, auto-vacuum, WAL transitions, and
+  `VACUUM`;
+- `src/lib/db/backup.ts`: database backup and restore lifecycle;
+- `src/lib/db/schemaColumns.ts`: SQLite schema introspection and compatibility columns;
+- `src/lib/memory/vectorStore.ts` and `src/lib/memory/retrieval.ts`: `vec0` and FTS5 behavior;
+- `src/lib/db/adapters/`: compatibility implementations for the supported SQLite runtimes.
+
+These areas should not be forced through a lowest-common-denominator repository interface. They
+need explicit SQLite capabilities or separate backend implementations.
+
+## Migration coupling
+
+The snapshot contains 129 tracked migration SQL files. `src/lib/db/migrationRunner.ts` does more
+than execute ordered files: it owns migration discovery, version history, duplicate-version safety,
+schema probes, FTS5 capability checks, pre-migration safety, and SQLite transaction execution.
+
+Consequently:
+
+- another SQL dialect cannot safely reuse the migration files unchanged;
+- external backends need their own migration implementation and schema history;
+- logical migration milestones may be shared, but physical SQL and capability probes remain
+  backend-specific;
+- multi-replica operation requires migration ownership or locking before an external backend is
+  considered ready.
+
+## Recommended cut lines
+
+### 1. Keep SQLite runtime compatibility intact
+
+Do not replace `SqliteAdapter` or the driver cascade in the first repository PR. Keep file recovery,
+WAL, backup, optimization, FTS5, and vector behavior behind the current SQLite implementation.
+
+### 2. Start with direct singleton consumers
+
+Use the 45-file direct-consumer list as the initial review queue. Classify each file as:
+
+- portable domain state;
+- backend-specific maintenance or search;
+- process-local or rebuildable state;
+- legacy access that should call an existing domain module.
+
+Classification must precede interface design. A path appearing in the inventory is not, by itself,
+a mandate to create a repository.
+
+### 3. Prove repositories with SQLite first
+
+For one bounded domain:
+
+1. define behavior-oriented repository operations;
+2. adapt current SQLite queries behind that repository;
+3. run behavior and transaction conformance tests against SQLite;
+4. migrate callers without changing the default runtime;
+5. only then implement the same repository for an external backend.
+
+### 4. Separate portable control-plane state from capability-specific data
+
+Provider connections, API keys, combos, and routing configuration are candidates for the first
+portable slice, subject to maintainer approval and a table-ownership review. Memory vector search,
+SQLite file backup/recovery, and database optimization are poor first slices because their behavior
+is deliberately SQLite-specific.
+
+### 5. Treat usage, quota, affinity, and audit as a later coordination slice
+
+These domains have concurrency and volume semantics beyond CRUD. Their repository contracts should
+be designed together with multi-replica transaction, lease, retention, and failure-mode tests rather
+than copied mechanically from current SQL.
+
+## What this inventory does not decide
+
+This inventory does not:
+
+- approve PostgreSQL or MySQL support;
+- define repository TypeScript interfaces;
+- choose the first table or domain to migrate;
+- claim every lexical match is a defect;
+- claim the current module boundaries are ineffective;
+- change SQLite, migrations, backup, search, or runtime behavior.
+
+Its purpose is to make the next design discussion evidence-based and reproducible.
diff --git a/scripts/check/audit-sqlite-coupling.mjs b/scripts/check/audit-sqlite-coupling.mjs
new file mode 100644
index 0000000000..4c43a86d96
--- /dev/null
+++ b/scripts/check/audit-sqlite-coupling.mjs
@@ -0,0 +1,277 @@
+#!/usr/bin/env node
+
+import { execFileSync } from "node:child_process";
+import { createHash } from "node:crypto";
+import { readFileSync } from "node:fs";
+import path from "node:path";
+
+const root = process.cwd();
+const toolRevision = execFileSync("git", ["rev-parse", "HEAD"], {
+  cwd: root,
+  encoding: "utf8",
+}).trim();
+
+const sourceRoots = ["src/", "open-sse/", "electron/", "bin/"];
+try {
+  execFileSync("git", ["diff", "--quiet", "HEAD", "--", ...sourceRoots], {
+    cwd: root,
+    stdio: "ignore",
+  });
+} catch {
+  throw new Error(
+    "Refusing to audit: tracked files in the configured source roots differ from HEAD. Commit or restore them first."
+  );
+}
+
+const trackedFiles = execFileSync("git", ["ls-files", "-z"], {
+  cwd: root,
+  encoding: "utf8",
+})
+  .split("\0")
+  .filter(Boolean);
+
+const sourceExtensions = new Set([".ts", ".tsx", ".js", ".mjs", ".cjs"]);
+const isTestFile = (file) =>
+  file.includes("/__tests__/") || /\.(?:test|spec)\.[cm]?[jt]sx?$/.test(file);
+const sourceFiles = trackedFiles.filter(
+  (file) =>
+    sourceRoots.some((prefix) => file.startsWith(prefix)) &&
+    sourceExtensions.has(path.extname(file)) &&
+    !isTestFile(file)
+);
+const migrationFiles = trackedFiles.filter(
+  (file) => file.startsWith("src/lib/db/migrations/") && file.endsWith(".sql")
+);
+const scannedFiles = [...sourceFiles, ...migrationFiles];
+const contents = new Map(
+  scannedFiles.map((file) => [file, readFileSync(path.join(root, file), "utf8")])
+);
+const corpusSha256 = createHash("sha256")
+  .update(
+    scannedFiles
+      .sort()
+      .map((file) => `${file}\0${contents.get(file)}\0`)
+      .join("")
+  )
+  .digest("hex");
+
+function countMatches(text, regex) {
+  return [
+    ...text.matchAll(
+      new RegExp(regex.source, regex.flags.includes("g") ? regex.flags : `${regex.flags}g`)
+    ),
+  ].length;
+}
+
+function maskCommentsAndLiterals(text) {
+  const output = [...text];
+  let state = "code";
+
+  for (let index = 0; index < text.length; index += 1) {
+    const char = text[index];
+    const next = text[index + 1];
+
+    if (state === "code") {
+      if (char === "/" && next === "/") {
+        output[index] = output[index + 1] = " ";
+        index += 1;
+        state = "line-comment";
+      } else if (char === "/" && next === "*") {
+        output[index] = output[index + 1] = " ";
+        index += 1;
+        state = "block-comment";
+      } else if (char === "'") {
+        output[index] = " ";
+        state = "single-quote";
+      } else if (char === '"') {
+        output[index] = " ";
+        state = "double-quote";
+      } else if (char === "`") {
+        output[index] = " ";
+        state = "template";
+      }
+      continue;
+    }
+
+    if (char !== "\n" && char !== "\r") output[index] = " ";
+    if (state === "line-comment" && (char === "\n" || char === "\r")) state = "code";
+    if (state === "block-comment" && char === "*" && next === "/") {
+      output[index + 1] = " ";
+      index += 1;
+      state = "code";
+    } else if (state === "single-quote" && char === "\\") {
+      if (index + 1 < text.length) output[index + 1] = " ";
+      index += 1;
+    } else if (state === "single-quote" && char === "'") {
+      state = "code";
+    } else if (state === "double-quote" && char === "\\") {
+      if (index + 1 < text.length) output[index + 1] = " ";
+      index += 1;
+    } else if (state === "double-quote" && char === '"') {
+      state = "code";
+    } else if (state === "template" && char === "\\") {
+      if (index + 1 < text.length) output[index + 1] = " ";
+      index += 1;
+    } else if (state === "template" && char === "`") {
+      state = "code";
+    }
+  }
+
+  return output.join("");
+}
+
+const codeContents = new Map(
+  sourceFiles.map((file) => [file, maskCommentsAndLiterals(contents.get(file) ?? "")])
+);
+
+function collect(regex, files = sourceFiles, source = codeContents) {
+  const matches = [];
+  let occurrences = 0;
+  for (const file of files) {
+    const count = countMatches(source.get(file) ?? "", regex);
+    if (count === 0) continue;
+    occurrences += count;
+    matches.push({ file, occurrences: count });
+  }
+  matches.sort(
+    (left, right) => right.occurrences - left.occurrences || left.file.localeCompare(right.file)
+  );
+  return { occurrences, files: matches.length, matches };
+}
+
+function splitDbLayer(result) {
+  const inside = result.matches.filter((entry) => entry.file.startsWith("src/lib/db/"));
+  const outside = result.matches.filter((entry) => !entry.file.startsWith("src/lib/db/"));
+  return {
+    total: { occurrences: result.occurrences, files: result.files, matches: result.matches },
+    insideDbLayer: {
+      occurrences: inside.reduce((sum, entry) => sum + entry.occurrences, 0),
+      files: inside.length,
+      matches: inside,
+    },
+    outsideDbLayer: {
+      occurrences: outside.reduce((sum, entry) => sum + entry.occurrences, 0),
+      files: outside.length,
+      matches: outside,
+    },
+  };
+}
+
+const adapterSurfacePatterns = {
+  prepare: /\.prepare(?:<[^>]+>)?\s*\(/g,
+  transaction: /\.transaction\s*\(/g,
+  immediate: /\.immediate\s*\(/g,
+  pragma: /\.pragma\s*\(/g,
+  backup: /\.backup\s*\(/g,
+  checkpoint: /\.checkpoint\s*\(/g,
+  lastInsertRowid: /\blastInsertRowid\b/g,
+};
+
+const sqliteDialectPatterns = {
+  pragma: /\bPRAGMA\b/gi,
+  sqliteMaster: /\bsqlite_master\b/gi,
+  beginImmediate: /\bBEGIN\s+IMMEDIATE\b/gi,
+  insertOrReplace: /\bINSERT\s+OR\s+REPLACE\b/gi,
+  autoincrement: /\bAUTOINCREMENT\b/gi,
+  datetimeNow: /datetime\s*\(\s*['"]now['"]\s*\)/gi,
+  vacuum: /\bVACUUM\b/gi,
+  walCheckpoint: /\bwal_checkpoint\b/gi,
+  fts5: /\bfts5\b/gi,
+  vec0: /\bvec0\b/gi,
+  lastInsertRowidFunction: /\blast_insert_rowid\s*\(/gi,
+};
+
+const adapterSurface = Object.fromEntries(
+  Object.entries(adapterSurfacePatterns).map(([name, regex]) => [
+    name,
+    splitDbLayer(collect(regex)),
+  ])
+);
+const sqliteDialect = Object.fromEntries(
+  Object.entries(sqliteDialectPatterns).map(([name, regex]) => [
+    name,
+    collect(regex, scannedFiles, contents),
+  ])
+);
+
+const directCoreConsumers = collect(/\bgetDbInstance\s*\(/g).matches.filter(
+  (entry) => !entry.file.startsWith("src/lib/db/")
+);
+const localDbImportConsumers = sourceFiles
+  .filter((file) =>
+    /(?:from|import\s*\()\s*["'][^"']*(?:\/lib\/localDb|\.\/localDb)["']/.test(
+      contents.get(file) ?? ""
+    )
+  )
+  .sort();
+const sqliteAdapterTypeConsumers = sourceFiles
+  .filter(
+    (file) =>
+      !file.startsWith("src/lib/db/") && /\bSqliteAdapter\b/.test(codeContents.get(file) ?? "")
+  )
+  .sort();
+
+const inventory = {
+  toolRevision,
+  corpusSha256,
+  scope: {
+    sourceRoots,
+    sourceFiles: sourceFiles.length,
+    migrationFiles: migrationFiles.length,
+    exclusions: [
+      "tests/",
+      "co-located __tests__ directories",
+      "*.test.* and *.spec.* source files",
+      "paths outside the configured source roots (including docs/ and scripts/)",
+    ],
+  },
+  boundaries: {
+    directGetDbInstanceOutsideDbLayer: {
+      files: directCoreConsumers.length,
+      occurrences: directCoreConsumers.reduce((sum, entry) => sum + entry.occurrences, 0),
+      matches: directCoreConsumers,
+    },
+    localDbImportConsumers: {
+      files: localDbImportConsumers.length,
+      paths: localDbImportConsumers,
+    },
+    sqliteAdapterTypeConsumersOutsideDbLayer: {
+      files: sqliteAdapterTypeConsumers.length,
+      paths: sqliteAdapterTypeConsumers,
+    },
+  },
+  adapterSurface,
+  sqliteDialect,
+};
+
+function markdownTable(rows) {
+  return [
+    "| Signal | Occurrences | Files | Outside `src/lib/db/` occurrences | Outside files |",
+    "| --- | ---: | ---: | ---: | ---: |",
+    ...rows.map(
+      ([name, value]) =>
+        `| \`${name}\` | ${value.total.occurrences} | ${value.total.files} | ${value.outsideDbLayer.occurrences} | ${value.outsideDbLayer.files} |`
+    ),
+  ].join("\n");
+}
+
+function renderTopMatches(matches, limit = 12) {
+  if (matches.length === 0) return "- None";
+  return matches
+    .slice(0, limit)
+    .map((entry) => `- \`${entry.file}\`: ${entry.occurrences}`)
+    .join("\n");
+}
+
+function renderMarkdown() {
+  const dialectRows = Object.entries(inventory.sqliteDialect).map(
+    ([name, value]) => `| \`${name}\` | ${value.occurrences} | ${value.files} |`
+  );
+  return `# SQLite coupling audit output\n\n- Audit-tool revision: \`${inventory.toolRevision}\`\n- Scanned-corpus SHA-256: \`${inventory.corpusSha256}\`\n- Tracked non-test source files scanned: ${inventory.scope.sourceFiles}\n- Migration SQL files scanned: ${inventory.scope.migrationFiles}\n\n## Boundary signals\n\n- Direct \`getDbInstance()\` call syntax outside comments and literals, excluding \`src/lib/db/\`: ${inventory.boundaries.directGetDbInstanceOutsideDbLayer.files} files / ${inventory.boundaries.directGetDbInstanceOutsideDbLayer.occurrences} occurrences\n- \`@/lib/localDb\` or relative \`localDb\` import consumers: ${inventory.boundaries.localDbImportConsumers.files} files\n- \`SqliteAdapter\` type consumers outside comments and literals, excluding \`src/lib/db/\`: ${inventory.boundaries.sqliteAdapterTypeConsumersOutsideDbLayer.files} files\n\n## Adapter-shaped call syntax\n\n${markdownTable(Object.entries(inventory.adapterSurface))}\n\n## SQLite dialect and lifecycle text\n\n| Signal | Occurrences | Files |\n| --- | ---: | ---: |\n${dialectRows.join("\n")}\n\n## Top direct \`getDbInstance()\` consumers outside the DB layer\n\n${renderTopMatches(inventory.boundaries.directGetDbInstanceOutsideDbLayer.matches)}\n\n## Top \`.prepare()\` files outside the DB layer\n\n${renderTopMatches(inventory.adapterSurface.prepare.outsideDbLayer.matches)}\n`;
+}
+
+if (process.argv.includes("--json")) {
+  process.stdout.write(`${JSON.stringify(inventory, null, 2)}\n`);
+} else {
+  process.stdout.write(renderMarkdown());
+}
diff --git a/scripts/check/audit-sqlite-coupling.test.mjs b/scripts/check/audit-sqlite-coupling.test.mjs
new file mode 100644
index 0000000000..98ec521240
--- /dev/null
+++ b/scripts/check/audit-sqlite-coupling.test.mjs
@@ -0,0 +1,77 @@
+import assert from "node:assert/strict";
+import { execFileSync, spawnSync } from "node:child_process";
+import { cpSync, mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import test from "node:test";
+import { fileURLToPath } from "node:url";
+
+const scriptPath = path.join(
+  path.dirname(fileURLToPath(import.meta.url)),
+  "audit-sqlite-coupling.mjs"
+);
+
+function git(cwd, ...args) {
+  return execFileSync("git", args, { cwd, encoding: "utf8" });
+}
+
+test("audit separates code syntax from comments/literals and rejects a dirty corpus", () => {
+  const root = mkdtempSync(path.join(tmpdir(), "omniroute-sqlite-audit-"));
+
+  try {
+    mkdirSync(path.join(root, "scripts/check"), { recursive: true });
+    mkdirSync(path.join(root, "src/lib/db/migrations"), { recursive: true });
+    cpSync(scriptPath, path.join(root, "scripts/check/audit-sqlite-coupling.mjs"));
+
+    writeFileSync(
+      path.join(root, "src/lib/db/core.ts"),
+      `export function internal(db) { return db.prepare("SELECT 1"); }\n`
+    );
+    writeFileSync(
+      path.join(root, "src/consumer.ts"),
+      `import { getDbInstance } from "./lib/db/core";\n` +
+        `import { getSettings } from "@/lib/localDb";\n` +
+        `// getDbInstance().prepare("comment only")\n` +
+        `const fixture = "getDbInstance().prepare('literal only')";\n` +
+        "const template = `getDbInstance().prepare('template only')`;\n" +
+        `export const value = getDbInstance().prepare("SELECT 1");\n`
+    );
+    writeFileSync(
+      path.join(root, "src/lib/db/migrations/001_fixture.sql"),
+      "PRAGMA foreign_keys = ON;\nCREATE TABLE fixture (id INTEGER PRIMARY KEY AUTOINCREMENT);\n"
+    );
+
+    git(root, "init", "-q");
+    git(root, "config", "user.email", "audit@example.invalid");
+    git(root, "config", "user.name", "Audit Test");
+    git(root, "add", ".");
+    git(root, "commit", "-qm", "fixture");
+
+    const result = JSON.parse(
+      execFileSync("node", ["scripts/check/audit-sqlite-coupling.mjs", "--json"], {
+        cwd: root,
+        encoding: "utf8",
+      })
+    );
+
+    assert.equal(result.boundaries.directGetDbInstanceOutsideDbLayer.files, 1);
+    assert.equal(result.boundaries.directGetDbInstanceOutsideDbLayer.occurrences, 1);
+    assert.equal(result.boundaries.localDbImportConsumers.files, 1);
+    assert.equal(result.adapterSurface.prepare.total.occurrences, 2);
+    assert.equal(result.adapterSurface.prepare.insideDbLayer.occurrences, 1);
+    assert.equal(result.adapterSurface.prepare.outsideDbLayer.occurrences, 1);
+    assert.equal(result.adapterSurface.prepare.total.matches.length, 2);
+    assert.equal(result.sqliteDialect.pragma.occurrences, 1);
+    assert.match(result.corpusSha256, /^[a-f0-9]{64}$/);
+
+    writeFileSync(path.join(root, "src/consumer.ts"), "// dirty tracked source\n", { flag: "a" });
+    const dirtyRun = spawnSync("node", ["scripts/check/audit-sqlite-coupling.mjs", "--json"], {
+      cwd: root,
+      encoding: "utf8",
+    });
+    assert.notEqual(dirtyRun.status, 0);
+    assert.match(dirtyRun.stderr, /Refusing to audit/);
+  } finally {
+    rmSync(root, { recursive: true, force: true });
+  }
+});