fix(skills): fix code block formatting in prisma-patterns

- Split bash/TS mixed block in expand-and-contract example into separate blocks
- Replace DATABASE_URL string concatenation with env var embedding pattern

docs/ECC-2.0-GA-ROADMAP.md

@@ -135,6 +135,42 @@ As of 2026-05-13:
   check-run on the PR head SHA with ready/blocked hosted executor commands
   and next action text, while keeping check-run publication best-effort so
   bundle generation and analysis comments are not blocked.
+- ECC-Tools PR #64 merged as `72020ef94db94840812977ea7ac37e9344036668`
+  and added PR-facing hosted job dispatch controls:
+  `/ecc-tools analyze --job ...` comments now queue hosted jobs against the
+  PR head SHA, execute them through the existing hosted readiness/evidence
+  gates, post artifacts/findings/next actions back to the PR, and scope
+  idempotency keys by job id so hosted jobs do not collide with bundle
+  analysis.
+- ECC-Tools PR #65 merged as `bacd4adf6a3a629e8d403865456d15f127baaf4e`
+  and added hosted job result history/check-run summaries:
+  queued hosted jobs now cache both the latest result and immutable run records
+  for completed or blocked runs, then publish a non-blocking per-job check-run
+  on the PR head SHA with artifacts, findings, readiness blockers, and next
+  actions.
+- ECC-Tools PR #66 merged as `4e1db48252d068ea5dcf4308b0bc11b0dfe0c9ce`
+  and added a read-only hosted status command:
+  `/ecc-tools analyze --job status` now reads the #65 latest-result cache for
+  the current PR head and posts a compact completed/blocked/not-run table with
+  the next hosted job command, without queueing work or billing usage.
+- ECC-Tools PR #67 merged as `f20e6bec2b0bf49e4cc36e08b7285c795973b73d`
+  and made the hosted depth-plan check-run status-aware:
+  queued PR analysis now reads the #65/#66 latest-result cache when publishing
+  `ECC Tools / Hosted Depth Plan`, includes the latest hosted run status in
+  the plan table, and recommends the next unrun ready job before reruns.
+- ECC-Tools PR #68 merged as `2cde524b5ef8f34ab7bb1af973248fe4be4359f8`
+  and added deterministic hosted promotion readiness:
+  opened/synchronized PRs now publish a non-blocking
+  `ECC Tools / Hosted Promotion Readiness` check-run that compares changed
+  files against the checked-in evaluator/RAG corpus, warns on missing
+  hosted-job promotion evidence, and can be disabled with
+  `PR_HOSTED_PROMOTION_READINESS_CHECK_MODE=off`.
+- ECC-Tools PR #69 merged as `d0112dac7cef807ae27def41f057682ef0772cce`
+  and extended hosted promotion readiness with deterministic output scoring:
+  the check now reads cached completed hosted job results for the current PR
+  head, scores their artifacts and findings against evaluator/RAG corpus
+  expectations, and treats matching hosted artifacts as promotion evidence
+  before reporting a gap.
 - Handoff `ecc-supply-chain-audit-20260513-0645.md` under
   `~/.cluster-swarm/handoffs/`
   records the May 13 supply-chain sweep: no active lockfile/manifest hit for
@@ -356,6 +392,28 @@ As of 2026-05-13:
 - ECC-Tools PR #63 publishes the hosted depth-plan check-run after queued PR
   analysis completes, making the six hosted executor commands visible on the
   PR head SHA without turning the check into a merge blocker.
+- ECC-Tools PR #64 wires those commands into the queue: maintainers can comment
+  `/ecc-tools analyze --job ci-diagnostics`, `security-evidence`,
+  `harness-compatibility`, `reference-set-evaluation`, `ai-routing-cost`, or
+  `team-backlog` on a PR and receive hosted job results in a PR comment.
+- ECC-Tools PR #65 persists completed and blocked hosted job results to the
+  analysis cache for 30 days and publishes non-blocking `ECC Tools / Hosted
+  Job: ...` check-runs so maintainers can scan hosted outcomes from the PR
+  checks surface instead of rereading older comments.
+- ECC-Tools PR #66 exposes the cached results from PR comments with
+  `/ecc-tools analyze --job status`, summarizing completed, blocked, and
+  not-yet-run hosted jobs for the PR head and recommending the next hosted job
+  command.
+- ECC-Tools PR #67 feeds those cached results back into the hosted depth-plan
+  check-run so queued analysis recommends the next unrun ready hosted job from
+  cache state instead of repeating the static readiness order.
+- ECC-Tools PR #68 adds the first evaluator-backed hosted promotion gate:
+  opened/synchronized PRs get a non-blocking Hosted Promotion Readiness
+  check-run that turns the evaluator/RAG corpus into warnings when changed
+  files match fixture scenarios without their expected evidence artifacts.
+- ECC-Tools PR #69 extends that gate to score cached completed hosted job
+  outputs for the current PR head, so hosted artifacts can satisfy corpus
+  evidence expectations before the check reports a promotion gap.
 - ECC PR #1803 landed the contributor Quarkus handling branch after maintainer
   cleanup, current-`main` alignment, full local validation, and preservation of
   the author's removal of incomplete ja-JP and zh-CN Quarkus translations.
@@ -409,10 +467,10 @@ is not complete unless the evidence column exists and has been freshly verified.
 | Claude and Codex plugin publication | Contact/submission path with required artifacts and status | Publication readiness, naming matrix, and May 12 dry-run evidence document plugin validation, clean-checkout Claude tag/install smoke, and Codex marketplace CLI shape | Needs explicit approval for real tag/push and marketplace submission |
 | Articles, tweets, and announcements | X thread, LinkedIn copy, GitHub release copy, push checklist | Draft launch collateral exists under rc.1 release docs | Needs URL-backed refresh |
 | AgentShield enterprise iteration | Policy gates, SARIF, packs, provenance, corpus, HTML reports, exception lifecycle audit, baseline drift Action/CLI surfaces, evidence-pack redaction, harness adapter registry, enterprise research roadmap, supply-chain hardened release path, CI-safe baseline fingerprints, corpus accuracy recommendations, remediation workflow phases, env proxy hijack corpus coverage | PRs #53, #55-#64, #67-#69, and #78-#82 landed with test evidence; native PDF export deferred in favor of self-contained HTML plus print-to-PDF until explicit enterprise demand appears; `docs/architecture/agentshield-enterprise-research-roadmap.md` now has baseline drift, evidence-pack bundle, redaction, adapter-registry, supply-chain hardening, hashed baseline fingerprints, corpus accuracy recommendation, remediation workflow, and env proxy hijack corpus slices landed | Next hosted evidence-pack workflow depth |
-| ECC Tools next-level app | Billing audit, PR checks, deep analyzer, sync backlog, evaluator/RAG corpus, analysis-depth readiness, hosted execution planning, hosted CI diagnostics, hosted security evidence review, hosted harness compatibility audit, hosted reference-set evaluation, hosted AI routing/cost review, hosted team backlog routing, hosted depth-plan check-run | PRs #26-#43 plus #53-#63 landed with test evidence, including AgentShield evidence-pack gap routing, canonical bundle recognition, supply-chain signature gates, PR draft follow-up Linear tracking, evidence-backed/deep-ready repository classification, the `/api/analysis/depth-plan` hosted job plan, `/api/analysis/jobs/ci-diagnostics`, `/api/analysis/jobs/security-evidence-review`, `/api/analysis/jobs/harness-compatibility-audit`, `/api/analysis/jobs/reference-set-evaluation`, `/api/analysis/jobs/ai-routing-cost-review`, `/api/analysis/jobs/team-backlog-routing`, and the `ECC Tools / Hosted Depth Plan` check-run | Hosted operator visibility complete; next work is hosted-job dispatch execution controls |
+| ECC Tools next-level app | Billing audit, PR checks, deep analyzer, sync backlog, evaluator/RAG corpus, analysis-depth readiness, hosted execution planning, hosted CI diagnostics, hosted security evidence review, hosted harness compatibility audit, hosted reference-set evaluation, hosted AI routing/cost review, hosted team backlog routing, hosted depth-plan check-run, PR-comment hosted job dispatch, hosted job result history/check-runs, hosted result status command, status-aware depth-plan recommendations, hosted promotion readiness, hosted promotion output scoring | PRs #26-#43 plus #53-#69 landed with test evidence, including AgentShield evidence-pack gap routing, canonical bundle recognition, supply-chain signature gates, PR draft follow-up Linear tracking, evidence-backed/deep-ready repository classification, the `/api/analysis/depth-plan` hosted job plan, `/api/analysis/jobs/ci-diagnostics`, `/api/analysis/jobs/security-evidence-review`, `/api/analysis/jobs/harness-compatibility-audit`, `/api/analysis/jobs/reference-set-evaluation`, `/api/analysis/jobs/ai-routing-cost-review`, `/api/analysis/jobs/team-backlog-routing`, the `ECC Tools / Hosted Depth Plan` check-run, `/ecc-tools analyze --job ...` PR-comment dispatch, non-blocking per-hosted-job result check-runs backed by 30-day result cache records, `/ecc-tools analyze --job status` cache lookup, cache-aware next-job recommendations in the depth-plan check-run, the `ECC Tools / Hosted Promotion Readiness` corpus-backed PR check-run, and deterministic hosted-output scoring against cached completed job artifacts/findings | Next work is retrieval/model-backed hosted promotion after deterministic output scoring |
 | GitGuardian/Dependabot/CodeRabbit-style checks | Non-blocking taxonomy, deterministic follow-up checks, and local supply-chain gates | ECC-Tools risk taxonomy check plus follow-up signals landed, including Skill Quality, Deep Analyzer Evidence, Analyzer Corpus Evidence, RAG/Evaluator Evidence, PR Review/Salvage Evidence, and AgentShield evidence-pack evidence; #1846 added npm registry signature gates; #1848 added the supply-chain incident-response playbook and `pull_request_target` cache-poisoning validator guard; #1851 added the privileged checkout credential-persistence guard; AgentShield #78, JARVIS #13, and ECC-Tools #53 applied the same hardening outside trunk | Current supply-chain gate complete; deeper hosted review features remain future |
-| Harness-agnostic learning system | Audit, adapter matrix, observability, traces, promotion loop | Audit/adapters/observability gates plus `docs/architecture/evaluator-rag-prototype.md`, `examples/evaluator-rag-prototype/`, and ECC-Tools PR #40 define read-only stale-salvage, billing-readiness, CI-failure-diagnosis, harness-config-quality, AgentShield policy-exception, skill-quality evidence, deep-analyzer evidence, and RAG/evaluator comparison scenarios with trace, report, playbook, verifier, and predictive-check artifacts | Local corpus complete; hosted integration remains future |
-| Linear roadmap is detailed | Linear project status plus repo mirror | Repo mirror exists; issue creation was retried on 2026-05-12 and remains blocked by the workspace free issue limit; this May 13 sync adds ECC #1860, AgentShield #78-#82, JARVIS #13, ECC-Tools #53-#63, resolved queue/discussion counts, and Linear project status updates through ECC-Tools #63 | Needs recurring status updates after each merge batch |
+| Harness-agnostic learning system | Audit, adapter matrix, observability, traces, promotion loop | Audit/adapters/observability gates plus `docs/architecture/evaluator-rag-prototype.md`, `examples/evaluator-rag-prototype/`, and ECC-Tools PR #40 define read-only stale-salvage, billing-readiness, CI-failure-diagnosis, harness-config-quality, AgentShield policy-exception, skill-quality evidence, deep-analyzer evidence, and RAG/evaluator comparison scenarios with trace, report, playbook, verifier, and predictive-check artifacts; ECC-Tools PRs #68/#69 now turn that corpus into a deterministic PR check-run gate with cached hosted-output scoring | Deterministic hosted PR check and cached output scoring integrated; hosted retrieval remains future |
+| Linear roadmap is detailed | Linear project status plus repo mirror | Repo mirror exists; issue creation was retried on 2026-05-12 and remains blocked by the workspace free issue limit; this May 13 sync adds ECC #1860, AgentShield #78-#82, JARVIS #13, ECC-Tools #53-#69, resolved queue/discussion counts, and Linear project status updates through ECC-Tools #69 | Needs recurring status updates after each merge batch |
 | Flow separation and progress tracking | Flow lanes with owner artifacts and update cadence | This roadmap defines lanes below and `docs/architecture/progress-sync-contract.md` makes GitHub/Linear/handoff/roadmap sync part of the readiness gate | Active |
 | Realtime Linear sync | Project updates while issue limit is blocked; issues later | ECC-Tools #39 implements opt-in Linear API sync for deferred follow-up backlog items, and ECC-Tools #54 adds copy-ready PR drafts to that backlog when draft PR shells are not opened; `docs/architecture/progress-sync-contract.md` defines the local file-backed realtime boundary while issue capacity is blocked | Needs workspace capacity/config rollout |
 | Observability for self-use | Local readiness gate, traces, status snapshots, HUD/status contract, risk ledger, progress-sync contract | `npm run observability:ready` reports 21/21 | Complete for local gate |
@@ -431,9 +489,9 @@ repo evidence and merge commits.
 | Queue hygiene and salvage | GitHub PR/issue state, salvage ledger | Append ledger entries for any future stale closures | Every cleanup batch |
 | Release and publication | rc.1 release docs, publication readiness doc | Naming matrix and plugin submission/contact checklist | Before any tag |
 | Harness OS core | Audit, adapter matrix, observability docs, `ecc2/` | HUD/session-control acceptance spec | Weekly until GA |
-| Evaluation and RAG | Reference-set validation, harness audit, traces, ECC-Tools corpus | Read-only evaluator/RAG prototype plus stale-salvage, billing-readiness, CI-failure-diagnosis, harness-config-quality, AgentShield policy-exception, skill-quality evidence, deep-analyzer evidence, and RAG/evaluator comparison fixtures | Hosted retrieval/check-run automation plan |
+| Evaluation and RAG | Reference-set validation, harness audit, traces, ECC-Tools corpus | Read-only evaluator/RAG prototype plus stale-salvage, billing-readiness, CI-failure-diagnosis, harness-config-quality, AgentShield policy-exception, skill-quality evidence, deep-analyzer evidence, and RAG/evaluator comparison fixtures; ECC-Tools #68 publishes the corpus as a hosted promotion readiness check-run, and #69 scores cached hosted job outputs against the same corpus | Hosted retrieval/model-backed promotion plan |
 | AgentShield enterprise | AgentShield PR evidence and roadmap notes | Remediation workflow depth or corpus expansion follow-up | Next implementation batch |
-| ECC Tools app | ECC-Tools PR evidence, billing audit, risk taxonomy, evaluator/RAG corpus | ECC-Tools #53 published the supply-chain workflow hardening branch, #54 tracks copy-ready PR drafts in the Linear/project backlog, #55 classifies analysis-depth readiness, #56 exposes the hosted execution plan, #57 executes the first hosted CI diagnostics job, #58 executes the hosted security evidence review job, #59 executes the hosted harness compatibility audit, #60 executes the hosted reference-set evaluation, #61 executes the hosted AI routing/cost review, #62 executes hosted team backlog routing, and #63 publishes the hosted depth-plan check-run; next work is hosted-job dispatch execution controls | Next implementation batch |
+| ECC Tools app | ECC-Tools PR evidence, billing audit, risk taxonomy, evaluator/RAG corpus | ECC-Tools #53 published the supply-chain workflow hardening branch, #54 tracks copy-ready PR drafts in the Linear/project backlog, #55 classifies analysis-depth readiness, #56 exposes the hosted execution plan, #57 executes the first hosted CI diagnostics job, #58 executes the hosted security evidence review job, #59 executes the hosted harness compatibility audit, #60 executes the hosted reference-set evaluation, #61 executes the hosted AI routing/cost review, #62 executes hosted team backlog routing, #63 publishes the hosted depth-plan check-run, #64 dispatches hosted jobs from PR comments, #65 persists hosted result history/check-runs, #66 exposes hosted job status from PR comments, #67 makes depth-plan recommendations cache-aware, #68 publishes hosted promotion readiness from the evaluator/RAG corpus, and #69 scores cached hosted job outputs against that corpus; next work is retrieval/model-backed hosted promotion | Next implementation batch |
 | Linear progress | Linear project status updates, `docs/architecture/progress-sync-contract.md`, and this mirror | Status update with queue/evidence/missing gates | Every significant merge batch |
 
 The project status update should always include:
@@ -650,10 +708,9 @@ Acceptance:
    PR #82 expanded corpus coverage for env proxy hijacks and out-of-band
    exfiltration; and ECC-Tools PRs #42/#43 now route and recognize evidence
    packs. The next slice is hosted evidence-pack workflow depth.
-2. Build hosted-job dispatch execution controls on top of the #63 hosted
-   depth-plan check-run so maintainers can queue the selected CI, security,
-   harness, reference-set, AI-routing, or team-backlog job from the PR-facing
-   operator surface instead of manually calling the internal endpoints.
+2. Plan retrieval/model-backed hosted promotion on top of the #69 deterministic
+   hosted output scoring contract, keeping vector/model judgment behind fixture
+   evaluation until the retrieval contract is stable.
 3. Enable/configure the merged Linear backlog sync path after workspace issue
    capacity clears or the Linear workspace is upgraded, then verify PR-draft
    salvage items land in the expected project.

manifests/install-modules.json

@@ -199,7 +199,8 @@
         "skills/database-migrations",
         "skills/jpa-patterns",
         "skills/mysql-patterns",
-        "skills/postgres-patterns"
+        "skills/postgres-patterns",
+        "skills/prisma-patterns"
       ],
       "targets": [
         "claude",

skills/prisma-patterns/SKILL.md

@@ -0,0 +1,371 @@
+---
+name: prisma-patterns
+description: Prisma ORM patterns for TypeScript backends — schema design, query optimization, transactions, pagination, and critical traps like updateMany returning count not records, $transaction timeouts, migrate dev resetting the DB, @updatedAt skipped on bulk writes, and serverless connection exhaustion.
+origin: ECC
+---
+
+# Prisma Patterns
+
+Production patterns and non-obvious traps for Prisma ORM in TypeScript backends.
+Tested against Prisma 5.x and 6.x. Some behaviors differ from Prisma 4.
+
+Check the Prisma version before applying version-specific patterns:
+
+```bash
+npx prisma --version
+```
+
+Prisma 5 introduced `relationJoins`, which can load relations via JOIN rather than separate queries depending on query strategy and configuration. The `omit` field modifier and `prisma.$extends` Client Extensions API were also added. Note: `relationJoins` can cause row explosion on large 1:N relations or deep nested `include` — benchmark both approaches when relations may return many rows per parent.
+
+## When to Activate
+
+- Designing or modifying Prisma schema models and relations
+- Writing queries, transactions, or pagination logic
+- Using `updateMany`, `deleteMany`, or any bulk operation
+- Running or planning database migrations
+- Deploying to serverless environments (Vercel, Lambda, Cloudflare Workers)
+- Implementing soft delete or multi-tenant row filtering
+
+## Core Concepts
+
+### ID Strategy
+
+| Strategy | Use When | Avoid When |
+|---|---|---|
+| `@default(cuid())` | Default choice — URL-safe, sortable, no collisions | Sequential IDs needed for external systems |
+| `@default(uuid())` | Interoperability with non-Prisma systems required | High-write tables (random UUIDs fragment B-tree indexes) |
+| `@default(autoincrement())` | Internal join tables, audit logs | Public-facing IDs (exposes record count) |
+
+### Schema Defaults
+
+```prisma
+model User {
+  id        String    @id @default(cuid())
+  email     String    @unique  // @unique already creates an index — no @@index needed
+  name      String
+  role      Role      @default(USER)
+  posts     Post[]
+  createdAt DateTime  @default(now())
+  updatedAt DateTime  @updatedAt
+  deletedAt DateTime?
+
+  @@index([createdAt])
+  @@index([deletedAt, createdAt]) // composite for soft-delete + sort queries
+}
+```
+
+- Add `@@index` on every foreign key and column used in `WHERE` or `ORDER BY`.
+- Declare `deletedAt DateTime?` upfront when soft delete is a foreseeable requirement — adding it later requires a migration on a live table.
+- `updatedAt @updatedAt` is set automatically by Prisma on `update` and `upsert` only (see Anti-Patterns for bulk update trap).
+
+### `include` vs `select`
+
+| | `include` | `select` |
+|---|---|---|
+| Returns | All scalar fields + specified relations | Only specified fields |
+| Use when | You need most fields plus a relation | Hot paths, large tables, avoiding over-fetch |
+| Performance | May over-fetch on wide tables | Minimal payload, faster on large datasets |
+| Prisma 5 note | Uses JOIN by default (`relationJoins`) | Same |
+
+```ts
+// include — all columns + relation
+const user = await prisma.user.findUnique({
+  where: { id },
+  include: { posts: { select: { id: true, title: true } } },
+});
+
+// select — explicit allowlist
+const user = await prisma.user.findUnique({
+  where: { id },
+  select: { id: true, email: true, name: true },
+});
+```
+
+Never return raw Prisma entities from API responses — map to response DTOs to control exposed fields:
+
+```ts
+// BAD: leaks passwordHash, deletedAt, internal fields
+return await prisma.user.findUniqueOrThrow({ where: { id } });
+
+// GOOD: explicit DTO mapping
+const user = await prisma.user.findUniqueOrThrow({ where: { id } });
+return { id: user.id, name: user.name, email: user.email };
+```
+
+### Transaction Form Selection
+
+| Situation | Use |
+|---|---|
+| Independent operations, no inter-dependency | Array form |
+| Later step depends on earlier result | Interactive form |
+| External calls (email, HTTP) involved | Outside transaction entirely |
+
+```ts
+// Array form — batched in one round trip
+const [user, post] = await prisma.$transaction([
+  prisma.user.update({ where: { id }, data: { name } }),
+  prisma.post.create({ data: { title, authorId: id } }),
+]);
+
+// Interactive form — use tx client only, never the outer prisma client
+const post = await prisma.$transaction(async (tx) => {
+  const user = await tx.user.findUniqueOrThrow({ where: { id } });
+  if (user.role !== 'ADMIN') throw new Error('Forbidden');
+  return tx.post.create({ data: { title, authorId: user.id } });
+});
+```
+
+### PrismaClient Singleton
+
+Each `PrismaClient` instance opens its own connection pool. Instantiate once.
+
+```ts
+// lib/prisma.ts
+import { PrismaClient } from '@prisma/client';
+
+const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient };
+
+export const prisma =
+  globalForPrisma.prisma ??
+  new PrismaClient({
+    log: process.env.NODE_ENV === 'development' ? ['query', 'error'] : ['error'],
+  });
+
+if (process.env.NODE_ENV !== 'production') globalForPrisma.prisma = prisma;
+```
+
+The `globalThis` pattern prevents duplicate instances during hot reload (Next.js, nodemon, ts-node-dev).
+
+### N+1 Problem
+
+Loading relations inside a loop issues one query per row.
+
+```ts
+// BAD: N+1 — one extra query per user
+const users = await prisma.user.findMany();
+for (const user of users) {
+  const posts = await prisma.post.findMany({ where: { authorId: user.id } });
+}
+
+// GOOD: single query
+const users = await prisma.user.findMany({ include: { posts: true } });
+```
+
+With Prisma 5+ `relationJoins`, the `include` form uses a single JOIN. On large 1:N sets this may increase result set size — benchmark both approaches if the relation can return many rows per parent.
+
+## Code Examples
+
+### Cursor Pagination (preferred for feeds and large datasets)
+
+```ts
+async function getPosts(cursor?: string, limit = 20) {
+  const items = await prisma.post.findMany({
+    where: { published: true },
+    orderBy: [
+      { createdAt: 'desc' },
+      { id: 'desc' }, // secondary sort prevents unstable pagination on duplicate timestamps
+    ],
+    take: limit + 1,
+    ...(cursor && { cursor: { id: cursor }, skip: 1 }),
+  });
+
+  const hasNextPage = items.length > limit;
+  if (hasNextPage) items.pop();
+
+  return { items, nextCursor: hasNextPage ? items[items.length - 1].id : null };
+}
+```
+
+Fetch `limit + 1` and pop — canonical way to detect `hasNextPage` without an extra count query. Always include a unique field (e.g. `id`) as a secondary `orderBy` to prevent unstable pagination when multiple rows share the same timestamp. Use offset pagination only when users need to jump to arbitrary pages (admin tables).
+
+### Soft Delete
+
+```ts
+// Always filter explicitly — do not rely on middleware (hides behavior, hard to debug)
+const activeUsers = await prisma.user.findMany({ where: { deletedAt: null } });
+
+await prisma.user.update({ where: { id }, data: { deletedAt: new Date() } });
+await prisma.user.update({ where: { id }, data: { deletedAt: null } }); // restore
+```
+
+### Error Handling
+
+```ts
+import { Prisma } from '@prisma/client';
+
+try {
+  await prisma.user.create({ data: { email } });
+} catch (e) {
+  if (e instanceof Prisma.PrismaClientKnownRequestError) {
+    if (e.code === 'P2002') throw new ConflictError('Email already exists');
+    if (e.code === 'P2025') throw new NotFoundError('Record not found');
+    if (e.code === 'P2003') throw new BadRequestError('Referenced record does not exist');
+  }
+  throw e;
+}
+```
+
+Common codes: `P2002` unique violation · `P2025` not found · `P2003` foreign key violation.
+
+Catch at the service boundary and translate to domain errors. Never expose raw Prisma messages to API consumers.
+
+### Connection Pool — Serverless
+
+Embed connection params directly in `DATABASE_URL` — string concatenation breaks if the URL already has query parameters (e.g. `?schema=public`):
+
+```bash
+# .env — preferred: embed params in the URL
+DATABASE_URL="postgresql://user:pass@host/db?connection_limit=1&pool_timeout=20"
+
+# With an external pooler (PgBouncer, Supabase pooler)
+DATABASE_URL="postgresql://user:pass@host/db?pgbouncer=true&connection_limit=1"
+```
+
+```ts
+// Vercel, AWS Lambda, and similar serverless runtimes: cap pool to 1 per instance
+// connection_limit and pool_timeout are controlled via DATABASE_URL
+const prisma = new PrismaClient();
+```
+
+## Anti-Patterns
+
+### `updateMany` returns a count, not records
+
+```ts
+// BAD: result is { count: 2 } — users[0] is undefined
+const users = await prisma.user.updateMany({ where: { role: 'GUEST' }, data: { role: 'USER' } });
+
+// GOOD: capture IDs first, then update, then fetch only the affected rows
+const targets = await prisma.user.findMany({
+  where: { role: 'GUEST' },
+  select: { id: true },
+});
+const ids = targets.map((u) => u.id);
+await prisma.user.updateMany({ where: { id: { in: ids } }, data: { role: 'USER' } });
+const updated = await prisma.user.findMany({ where: { id: { in: ids } } });
+```
+
+Same applies to `deleteMany` — returns `{ count: n }`, never the deleted rows.
+
+### `$transaction` interactive form times out after 5 seconds
+
+```ts
+// BAD: external call inside transaction exceeds 5s default → "Transaction already closed"
+await prisma.$transaction(async (tx) => {
+  const user = await tx.user.findUniqueOrThrow({ where: { id } });
+  await sendWelcomeEmail(user.email); // external call
+  await tx.user.update({ where: { id }, data: { emailSent: true } });
+});
+
+// GOOD: external calls outside the transaction
+const user = await prisma.user.findUniqueOrThrow({ where: { id } });
+await sendWelcomeEmail(user.email);
+await prisma.user.update({ where: { id }, data: { emailSent: true } });
+
+// Only raise timeout when bulk processing genuinely needs it
+await prisma.$transaction(async (tx) => { ... }, { timeout: 30_000 });
+```
+
+### `migrate dev` can reset the database
+
+`migrate dev` detects schema drift and may prompt to reset the DB, dropping all data.
+
+```bash
+# NEVER on shared dev, staging, or production
+npx prisma migrate dev --name add_column
+
+# Safe everywhere except local solo dev
+npx prisma migrate deploy
+
+# Check drift without applying
+npx prisma migrate diff \
+  --from-migrations ./prisma/migrations \
+  --to-schema-datamodel ./prisma/schema.prisma \
+  --shadow-database-url "$SHADOW_DATABASE_URL"
+```
+
+### Manually editing a migration file breaks future deploys
+
+Prisma checksums every migration file. Editing after apply causes `P3006 checksum mismatch` on every environment where the original already ran. Create a new migration instead.
+
+### Breaking schema changes require multi-step migration
+
+Adding `NOT NULL` to an existing column or renaming a column in one migration will lock the table or drop data. Use expand-and-contract:
+
+```bash
+# Step 1: create migration locally, then deploy
+npx prisma migrate dev --name add_new_column   # local only
+npx prisma migrate deploy                       # staging / production
+```
+
+```ts
+// Step 2: backfill data (run in a script or migration job, not in the shell)
+await prisma.user.updateMany({ data: { newColumn: derivedValue } });
+```
+
+```bash
+# Step 3: create the NOT NULL constraint migration locally, then deploy
+npx prisma migrate dev --name make_new_column_required  # local only
+npx prisma migrate deploy                               # staging / production
+```
+
+### `@updatedAt` does not fire on `updateMany`
+
+`@updatedAt` is set automatically only on `update` and `upsert`. Bulk writes leave it stale.
+
+```ts
+// BAD: updatedAt stays at its old value
+await prisma.post.updateMany({ where: { authorId }, data: { published: true } });
+
+// GOOD
+await prisma.post.updateMany({
+  where: { authorId },
+  data: { published: true, updatedAt: new Date() },
+});
+```
+
+### Soft delete + `findUniqueOrThrow` leaks deleted records
+
+`findUniqueOrThrow` throws `P2025` only when the row does not exist in the DB. Soft-deleted rows still exist and are returned without error.
+
+`findUniqueOrThrow` requires a unique constraint field in `where` — adding `deletedAt: null` alongside `id` breaks the type because `{ id, deletedAt }` is not a compound unique constraint. Use `findFirstOrThrow` instead.
+
+```ts
+// BAD: returns soft-deleted user
+const user = await prisma.user.findUniqueOrThrow({ where: { id } });
+
+// BAD: Prisma type error — { id, deletedAt } is not a unique constraint
+const user = await prisma.user.findUniqueOrThrow({ where: { id, deletedAt: null } });
+
+// GOOD: findFirstOrThrow supports arbitrary where conditions
+const user = await prisma.user.findFirstOrThrow({ where: { id, deletedAt: null } });
+```
+
+### `deleteMany` without `where` deletes every row
+
+```ts
+// BAD: silently wipes the table
+await prisma.post.deleteMany();
+
+// GOOD
+await prisma.post.deleteMany({ where: { authorId: userId } });
+```
+
+## Best Practices
+
+| Rule | Reason |
+|---|---|
+| `migrate deploy` in CI/CD, `migrate dev` only locally | `migrate dev` can reset the DB on drift |
+| Map entities to response DTOs | Prevents leaking internal fields |
+| Catch `PrismaClientKnownRequestError` at service boundary | Translate to domain errors |
+| Prefer `*OrThrow` methods over manual null checks | Throws P2025 automatically; use `findFirstOrThrow` when filtering non-unique fields |
+| `connection_limit=1` + external pooler in serverless | Prevents connection exhaustion |
+| Always provide `where` on `deleteMany` | Prevents accidental table wipe |
+| Set `updatedAt: new Date()` manually in `updateMany` | `@updatedAt` skips bulk writes |
+
+## Related Skills
+
+- `nestjs-patterns` — NestJS service layer that integrates Prisma
+- `postgres-patterns` — PostgreSQL-level indexing and connection tuning
+- `database-migrations` — multi-step migration planning for production
+- `backend-patterns` — general API and service layer design

tests/docs/evaluator-rag-prototype.test.js

@@ -130,12 +130,12 @@ test('candidate playbook preserves stale-salvage operating rules', () => {
   }
 });
 
-test('roadmap points to the evaluator RAG prototype and keeps hosted integration open', () => {
+test('roadmap points to the evaluator RAG prototype and hosted PR check', () => {
   const roadmap = read('docs/ECC-2.0-GA-ROADMAP.md');
 
   assert.ok(roadmap.includes('docs/architecture/evaluator-rag-prototype.md'));
   assert.ok(roadmap.includes('examples/evaluator-rag-prototype/'));
-  assert.ok(roadmap.includes('Local corpus complete; hosted integration remains future'));
+  assert.ok(roadmap.includes('Deterministic hosted PR check and cached output scoring integrated; hosted retrieval remains future'));
 });
 
 test('billing readiness scenario rejects launch copy overclaims', () => {