fix(ci): separate CI and CD into distinct pipelines

[nsheaps]

Summary

Fixes the infinite CI loop on main (release→screenshots→release→..., up to v0.1.31) by restructuring into clean, separated CI and CD pipelines with reusable workflows.

CI (ci.yml) — push to main + PRs

├── _lint.yml           (lint + typecheck)
├── _test-unit.yml      (unit tests)
├── _test-integration.yml (integration tests)
├── _test-e2e.yml       (e2e tests)          ← all parallel
├── _build.yml          (after lint + unit)
└── _update-screenshots.yml (pixel-level comparison)
        │
        ▼
  _tag-release.yml (after ALL above, push to main only)
    ├── commit screenshots locally (only if pixels changed)
    ├── release-it: bump + CHANGELOG + commit [skip ci] + tag + push
    └── or: push screenshot commit [skip ci] only (if no bump needed)

CD (cd.yml) — triggered by create event on v* tags

├── create GitHub release (from CHANGELOG.md)
├── deploy web → GitHub Pages
├── build macOS / Windows / Linux     ← all parallel
├── build iOS / Android
        │
        ▼
  upload-release-assets (after all builds + release)

Why there's no loop

• Release commit includes [skip ci] → GitHub skips CI entirely
• CD uses on: create event (not on: push: tags) which is not affected by [skip ci]
• Screenshot commits include [skip ci] → no re-trigger
• No should-run gate needed — [skip ci] handles it natively

Key changes

File	Change
ci.yml	Slim orchestrator (~40 lines) calling reusable workflows
_lint.yml	Reusable: lint + typecheck
_test-unit.yml	Reusable: unit tests
_test-integration.yml	Reusable: integration tests
_test-e2e.yml	Reusable: e2e tests
_build.yml	Reusable: production build
_update-screenshots.yml	Reusable: capture + pixel-level compare (ImageMagick)
_tag-release.yml	Reusable: commit screenshots + release-it (no GitHub release)
cd.yml	New: consolidated CD (was release-web/desktop/mobile.yml)
.release-it.json	github.release: false, commit message adds [skip ci]
release.yml	Simplified to manual bump+tag+push (CD handles the rest)
auto-release.yml	Deleted (merged into CI tag-release)
update-screenshots.yml	Deleted (merged into CI screenshots)
release-web.yml	Deleted (merged into CD)
release-desktop.yml	Deleted (merged into CD)
release-mobile.yml	Deleted (merged into CD)

Screenshot metadata fix

Screenshots compared pixel-by-pixel with ImageMagick compare -metric AE. If 0 pixels differ (metadata-only change), the original file is restored — no commit generated.

Test plan

• Push a feat: commit to main → CI runs all jobs in parallel → tags release → CD deploys
• Verify [skip ci] in release commit prevents CI re-trigger
• Verify on: create tag event triggers CD despite [skip ci]
• Verify screenshot metadata-only changes don't produce commits
• Verify PR pushes run CI but skip tag-release
• Verify manual release workflow still works (workflow_dispatch)
• Verify reusable workflows are correctly called from CI orchestrator

https://claude.ai/code/session_01S7y4A9bjckeJui8aGW3Xeq

[github-actions]

Release Version Check

🟢 PATCH version bump

	Version
Current	0.1.31
Next	0.1.32

This version will be released automatically when this PR is merged to main.

Changelog preview

0.1.32 (2026-03-11)

Bug Fixes

• ci: break release/screenshot infinite loop (54a1340)
• ci: consolidate CI/screenshots/release into single pipeline (3074bb0)
• ci: separate CI and CD into distinct pipelines (0485051)

Refactoring

• ci: extract reusable workflows, use [skip ci] for releases (d34cfd1)

[github-actions]

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