chore(ci): migrate to Gitea local CI, disable GitHub Actions

- Add .gitea/workflows/ci.yml for Gitea Actions
- Disable GitHub Actions: ci-extraction-service, ci-mcp-server, reusable-pnpm-workspace
- Add docs/devops/GITEA_LOCAL_CI.md setup guide

.gitea/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI — Common Platform
+
+on:
+  push:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-and-test:
+    name: Build, Test & Typecheck
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Build all packages
+        run: pnpm build
+
+      - name: Typecheck
+        run: pnpm typecheck
+
+      - name: Test
+        run: pnpm test

docs/devops/GITEA_LOCAL_CI.md

@@ -0,0 +1,112 @@
+# Gitea Local CI — Self-Hosted CI for ByteLyst Ecosystem
+
+## Overview
+
+Self-hosted Gitea + act_runner replaces GitHub Actions (billing blocked). Runs CI jobs directly on your Mac — no Docker required.
+
+## Architecture
+
+| Component      | Port | Purpose                          |
+| -------------- | ---- | -------------------------------- |
+| **Gitea**      | 3300 | Git hosting + Actions engine     |
+| **act_runner** | —    | Executes CI jobs on host (macOS) |
+
+- **GitHub (`origin`)** — unchanged, primary code hosting
+- **Gitea (`gitea`)** — secondary remote, triggers local CI on push
+
+## Credentials
+
+- **URL:** http://localhost:3300
+- **Username:** `bytelyst`
+- **Password:** `bytelyst123`
+
+## Quick Commands
+
+```bash
+# Start services
+brew services start gitea
+brew services start act_runner
+
+# Stop services
+brew services stop act_runner
+brew services stop gitea
+
+# Check status
+brew services list | grep -E "gitea|act_runner"
+
+# Push to trigger CI
+git push gitea main
+```
+
+## Config Locations
+
+| File                | Path                                          |
+| ------------------- | --------------------------------------------- |
+| Gitea config        | `/opt/homebrew/var/gitea/custom/conf/app.ini` |
+| Runner config       | `/opt/homebrew/etc/act_runner/config.yaml`    |
+| Runner registration | `/opt/homebrew/var/act_runner/.runner`        |
+| Gitea data          | `/opt/homebrew/var/gitea/data/`               |
+| Gitea logs          | `/opt/homebrew/var/gitea/log/`                |
+| Job work dir        | `~/.cache/act/`                               |
+
+## How It Works
+
+1. You `git push gitea main` from any repo
+2. Gitea detects `.gitea/workflows/ci.yml` in the pushed code
+3. act_runner picks up the job and runs it on your Mac (host mode)
+4. Jobs have access to node, pnpm, python, etc. from your system PATH
+5. `@bytelyst/*` packages are built from the local common-plat checkout (`/Users/sd9235/code/mygh/learning_ai_common_plat`)
+
+## Repos Configured
+
+All 14 repos have:
+
+- `gitea` remote → `http://localhost:3300/bytelyst/<repo>.git`
+- `.gitea/workflows/ci.yml` — Gitea Actions workflow (adapted from GitHub Actions)
+- `.github/workflows/ci.yml.disabled` — GitHub Actions disabled
+
+## Differences from GitHub Actions
+
+| Feature              | GitHub Actions                                   | Gitea Actions                     |
+| -------------------- | ------------------------------------------------ | --------------------------------- |
+| Runner               | Ubuntu container                                 | macOS host                        |
+| common-plat checkout | `actions/checkout` with `repository:` + `GH_PAT` | Already on disk at `$COMMON_PLAT` |
+| Node setup           | `actions/setup-node@v4`                          | Already installed via brew        |
+| pnpm setup           | `pnpm/action-setup@v4`                           | Already installed via brew        |
+| Concurrency          | Free tier limited                                | Unlimited (local)                 |
+
+## Push to Both Remotes
+
+To push to both GitHub and Gitea in one command, add a script alias:
+
+```bash
+# Add to ~/.zshrc
+gpush() { git push origin main && git push gitea main; }
+```
+
+## Troubleshooting
+
+### Runner not picking up jobs
+
+```bash
+brew services restart act_runner
+# Check logs
+tail -50 /opt/homebrew/var/log/act_runner.log
+```
+
+### Gitea not responding
+
+```bash
+brew services restart gitea
+curl -s http://localhost:3300/api/v1/version
+```
+
+### Re-register runner
+
+```bash
+brew services stop act_runner
+rm /opt/homebrew/var/act_runner/.runner
+TOKEN=$(curl -s -u "bytelyst:bytelyst123" http://localhost:3300/api/v1/admin/runners/registration-token | python3 -c "import sys,json; print(json.load(sys.stdin)['token'])")
+cd /opt/homebrew/var/act_runner && /opt/homebrew/opt/act_runner/bin/act_runner register --config /opt/homebrew/etc/act_runner/config.yaml --instance http://localhost:3300 --token "$TOKEN" --name bytelyst-mac --no-interactive
+brew services start act_runner
+```