[niekcandaele]

Summary

Implements Phase 4 of Takaro PR #2723 (subscribable module registries): reshape gettakaro/ai-module-writer into the first registry. A new build script generates a registry.json manifest plus per-version JSON files for each of the 11 modules into dist/registry/, and a GitHub Actions workflow publishes that tree to a registry branch on every push to main. End state: a Takaro user in any domain can subscribe to https://raw.githubusercontent.com/gettakaro/ai-module-writer/registry/registry.json and install/update modules from a clean UI flow.

The published registry expects modules to use real semver versions, names matching the PR's manifest schema (/^[a-zA-Z0-9_-]+$/), and to not collide with Takaro built-in module names — which drove a meaningful chunk of this branch's work.

Architecture

                                                    
push to main           CI workflow (publish-registry.yml)
─────────────►   ┌──────────────────────────────────────┐
                 │ npm ci → npm run build               │
                 │ npm run build:registry               │
                 │   ├── reads registry.config.json     │
                 │   ├── reads modules/*/module.json    │
                 │   ├── validates name/semver/length   │
                 │   └── writes dist/registry/{...}     │
                 │ peaceiris/actions-gh-pages@v4        │
                 │   force_orphan: true                 │
                 └──────┬───────────────────────────────┘
                        │
                        ▼
              registry branch (orphan)
              ├── registry.json
              ├── jackpot/1.0.0.json
              ├── server-toolkit/1.0.0.json
              └── … 9 more

raw.githubusercontent.com serves these files
                        │
                        ▼
             ┌─────────────────────────┐
             │ Takaro app-api          │
             │ RegistryService         │
             │  ├── fetchManifest()    │
             │  └── installFromRegistry│
             └─────────────────────────┘

What Changed

• Module identity (all 11 modules): name field normalized to match directory name (drop test- prefix), version bumped from "latest" to "1.0.0" (registry requires valid semver). Module descriptions cleaned up for end-user clarity in the install dialog.
• Module renames to avoid collisions with Takaro built-ins:
  • modules/lottery/ → modules/jackpot/ (Takaro ships a built-in lottery). Cascaded through commands (/jackpotinfo), permissions (JACKPOT_*), function file (jackpot-helpers.js), storage keys, log prefixes, and test assertions.
  • modules/utils/ → modules/server-toolkit/ (built-in utils). Cascaded through permissions (TOOLKIT_*), function files (server-toolkit-{helpers,pure}.js), log prefixes, and test assertions.
• Registry build pipeline:
  • src/scripts/build-registry.ts (new): reads registry.config.json + each module, validates against the PR's RegistryManifestDTO constraints (name regex, semver, length limits), writes dist/registry/registry.json and dist/registry/{name}/{version}.json for each module. Wipes dist/registry/ before each build (with path-shape invariant) so renamed/removed modules don't leave stale artifacts.
  • src/scripts/module-to-json.ts: refactored to expose buildModuleExport() as a reusable function; CLI is a thin wrapper. safeRealpath() helper unifies broken-symlink errors.
  • src/utils/validate.ts: validateEntityName now throws (was process.exit(1)) so it's safe to call from long-running processes.
  • registry.config.json (new): registry-level metadata (name, description) shown in Takaro's "Add Registry" UI.
• Publish workflow (.github/workflows/publish-registry.yml, new): triggered on push to main + workflow_dispatch. Logs into AWS CodeArtifact (mirrors ci.yml pattern for @takaro/* private deps), builds the registry, force-pushes the output to the registry branch via peaceiris/actions-gh-pages@v4. Concurrency guard prevents overlapping runs from racing.
• Test infrastructure (test/helpers/modules.ts):
  • assertTestSafeHost() — refuses to run pushModule/cleanupTestModules against production-looking hosts. Substring matches localhost, *.takaro.dev, .staging./.dev./.test./.ci., plus single-label Docker hostnames and .test/.localhost TLDs (RFC 6761 reserved). Override env vars: TAKARO_TEST_HOST_ALLOWLIST (preferred) and TAKARO_TEST_ALLOW_ANY_HOST=1 (last resort).
  • getKnownModuleNames() — discovers modules from the filesystem at runtime instead of hand-maintained list.
  • pushModule/cleanupTestModules switched from search: (partial-match) to filters: (exact-match) for deterministic queries.
• Tests: test/helpers/modules-guard.test.ts (new) — 12 unit tests for the safety guard. package.json test glob expanded to '{modules/*/test,test/helpers}/*.test.ts' so CI picks up the new file. pretest now runs build:registry so a broken module.json fails fast before integration tests start.
• Documentation: AGENTS.md gained a "Module Conventions" section (semver bump on change, name=directory-name) and a "Safety guard for test helpers" reference (full error template, numbered fix list, auto-accepted hosts list). README.md added "Published Registry" section with the public URL, the known content-type blocker (see below), and a dev local-serve workflow.

Reviewer Guide

• Start here: src/scripts/build-registry.ts — the new artifact pipeline. Then read the workflow at .github/workflows/publish-registry.yml.
• Pay attention to:
  • test/helpers/modules.ts assertTestSafeHost() — the substring/TLD pattern logic is intentionally narrow; any change to the safe-host criteria should add a unit test in modules-guard.test.ts first.
  • The two module renames cascade through many files. The grep invariant should hold: grep -ri 'lottery\|utils' modules/jackpot modules/server-toolkit --include='*.json' --include='*.js' --include='*.ts' returns zero hits.
• Design decisions:
  • Registry hosting: the registry branch served via raw.githubusercontent.com is the lowest-friction publishing story for third-party registry maintainers (just push files to a branch). However, raw.githubusercontent.com returns Content-Type: text/plain for .json files, and Takaro PR #2723's strict contentType.includes('json') check rejects this. Coordinated work: a small Takaro-side PR is needed to either drop that check (DTO validation already rejects malformed bodies) or accept text/plain when the body parses as JSON. Tracked in the README status note.
  • Single version per module for v1.0.0: registry manifest lists versions: ["1.0.0"] for each module. Multi-version history (walking git tags) is intentionally deferred to Phase 6. This means bumping a module to 1.0.1 will replace the 1.0.0 artifact on the registry branch — acceptable for v1.0.0 release; revisit before any module bumps.
  • Module renames lottery → jackpot, utils → server-toolkit: chosen over the alternative of keeping the names + adding BUILTIN_MODULE_NAMES guards in pushModule/cleanupTestModules. The rename is cleaner: no asymmetric guards, no surprises for registry consumers, no risk of clobbering Takaro built-ins.
  • Cleanup blast radius on shared dev hosts: cleanupTestModules will delete any module on TAKARO_HOST matching a modules/ subdir name. Mitigated by assertTestSafeHost. Codex flagged this as sev 7 across multiple review passes; accepted as a documented tradeoff.

Implementation Journey

Built via the player-coach loop in 8 turns (severity threshold 3).

Turn	Phase	Outcome
1	Verify	Initial implementation: 11 module renames, build-registry script, publish workflow → 14 issues sev 3-8
2	Verify	Validate-throws fix, host safety guard, search→filters, descriptions → 12 issues, exerciser PASSED
3	Verify	Host pattern broadened too far; BUILTIN guard added → EXERCISER FAILED (sev 9 lottery/utils collision)
4	Verify	Strategic rename to jackpot/server-toolkit → tests 144/144, only naming polish remained
5	Verify	Comprehensive internal rename (commands, permissions, helpers, AGENTS.md guard rewrite) → 5 sev≥3
6	Verify	Final stale-string sweep (log prefixes, test assertions) → 5 cosmetic items
7	Verify	Directory rename + describe blocks + comments + capitalized log prefix → 2 doc/config items
8	Verify	Skill-doc + npm test glob fixes → APPROVED

Friction Log

• Module-name collisions with Takaro built-ins (turns 1-4): renaming modules to drop the test- prefix made modules/lottery/ and modules/utils/ collide with Takaro built-ins of the same name. Tests for those modules failed cryptically with "moduleId undefined" — pushModule couldn't delete the protected built-ins, so import never completed, and teardown crashed on the missing id. Strategic fix: rename to modules/jackpot/ and modules/server-toolkit/ rather than guard-hack around the collision. Reviewers should confirm no third Takaro built-in collides with our remaining 9 module names.

• Host safety guard pattern matching (turns 2-3): the guard for assertTestSafeHost oscillated — turn 2 was too strict (rejected next.takaro.dev despite being the user's actual staging environment), turn 3 was too loose (accepted any .dev TLD including prod.dev). Final design: substring .takaro.dev for staging, single-label hostnames for Docker, RFC 6761 reserved TLDs (.test, .localhost). The 12 unit tests in modules-guard.test.ts lock this in.

• Module rename completeness (turns 4-7): the lottery→jackpot/utils→server-toolkit rename took 4 incremental turns to fully propagate. Each pass missed a layer: turn 4 kept old internal identifiers (commands, permissions); turn 5 missed test trigger string + log assertion in one specific test file; turn 6 missed directory paths + describe blocks; turn 7 finally renamed source/test directories + describe blocks + comments + capitalized log prefix. Future similar refactors: grep -ri 'old-name' module-dir/ after each rename pass.

• AGENTS.md guard documentation (turns 2-5): re-edited each turn with new minor issues until turn 5 took the one-shot rewrite approach (concise structure: error block + numbered fixes + auto-accepted hosts list). The pattern of "incrementally polishing prose introduces new mistakes" suggests doing one well-structured rewrite is faster than three rounds of edits.

Below-Threshold Issues (not blocking — for follow-up if useful)

• (sev 2) AGENTS.md "CI:" line in safety guard section sits slightly detached from the auto-accepted hosts list — could prefix with "Note:" for cleaner reading.
• (sev 2) assertTestSafeHost substring .takaro.dev would technically match attacker.takaro.dev.evil.com — dev-time guard, not an auth boundary; flagged for awareness only.
• (sev 2) build-registry.ts rmSync invariant uses POSIX-style endsWith('dist/registry') — Windows would fail; acceptable since the README recommends WSL2 for Windows.
• (sev 7, accepted) Codex repeatedly flagged that cleanupTestModules on a shared dev/staging tenant can delete modules other developers installed. Mitigated by assertTestSafeHost and documented in AGENTS.md. The tradeoff is real: getting strict isolation back would require a per-developer namespace or test-instance-per-developer.
• (sev 8, accepted) Codex flagged that force_orphan: true + keep_files: false means published versions disappear from the registry branch when a newer version ships. Acceptable for v1.0.0 (no module has bumped yet) but revisit before any module hits 1.0.1 — the multi-version history work in Phase 6 of the plan addresses this.

Testing Plan

Happy Path

• Pull this branch; run npm install --legacy-peer-deps then npm run build && npm run build:registry. Confirm dist/registry/registry.json exists and contains exactly 11 module entries (afk-kick, community-fund, daily-rewards, hello-world, jackpot, kill-tracker, mini-games, referral-program, server-messages, server-toolkit, vote-restart).
• Inspect dist/registry/jackpot/1.0.0.json — verify command triggers include jackpotinfo (NOT lotteryinfo) and permissions are JACKPOT_*. Same for dist/registry/server-toolkit/1.0.0.json → TOOLKIT_* permissions.
• Locally serve: python3 -m http.server 8765 --directory dist/registry. From a Takaro dev stack built off feature/module-registry-system with TAKARO_REGISTRY_ALLOWED_PRIVATE_HOSTS set to include host.docker.internal, subscribe to http://host.docker.internal:8765. Confirm 11 modules appear.
• Install hello-world v1.0.0 from the registry. Confirm the module appears with the "Registry" chip, Edit/Delete are disabled, Copy is available.

Edge Cases

• Run npm test against your local Takaro dev/staging — verify the host guard accepts your host (use TAKARO_TEST_HOST_ALLOWLIST if you have a non-standard hostname). The 12 unit tests in test/helpers/modules-guard.test.ts should all pass alongside the integration tests.
• Run npm test with TAKARO_HOST=https://api.takaro.io — expect a clean refusal error pointing to AGENTS.md.
• Temporarily corrupt modules/hello-world/module.json (set version: "latest" or name: "Hello World!") and run npm run build:registry — expect a clean exit-1 with a clear error message naming the offending module.
• Bump modules/hello-world/module.json version to 1.0.1, change a command, re-run npm run build:registry — verify the new file appears at dist/registry/hello-world/1.0.1.json and the registry manifest's versions for hello-world updates.

Regression Checks

• All 11 modules' integration tests still pass (especially modules/jackpot/test/* and modules/server-toolkit/test/server-toolkit.test.ts — those went through the most rename churn).
• grep -ri 'lottery\|utils' modules/jackpot modules/server-toolkit --include='*.json' --include='*.js' --include='*.ts' returns ZERO hits (verifies the rename is comprehensive).
• npm run module:to-json -- modules/hello-world still works (CLI wrapper around the refactored buildModuleExport).
• npm run module:from-json and npm run module:migrate unaffected.

Coordinated Work Before Launch

• Open a Takaro-side PR to relax the contentType.includes('json') check in packages/app-api/src/service/Registry/index.ts — raw.githubusercontent.com returns Content-Type: text/plain for .json files, so the strict check rejects the official URL. Either drop the check (DTO validation already rejects malformed bodies) or accept text/plain when the body parses as JSON. Without this, the published registry URL is unsubscribable from production Takaro.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Match safety patterns against hostname only

assertTestSafeHost currently checks TAKARO_HOST with raw substring matching on the full URL string, so a production host can be misclassified as safe when test-like text appears outside the hostname (for example in userinfo/path/query, e.g. https://localhost@api.takaro.io). In that scenario the new guard is bypassed and pushModule/cleanupTestModules can still delete real modules on production.

Useful? React with 👍 / 👎.

[chatgpt-codex-connector]

Use path separator-safe check before rmSync

The safety invariant uses DIST_REGISTRY_DIR.endsWith('dist/registry'), which only matches POSIX separators. On Windows this path ends with dist\registry, so build:registry will always throw before writing output. This makes the new registry build script unusable for Windows-based development workflows.

Useful? React with 👍 / 👎.

[niekcandaele]

Superseded by #71 (registry build, validator and GitHub Pages publish), part of gettakaro/takaro#4616. Posted by the epic-runner agent on behalf of @niekcandaele.