chore: add repo refresh onboarding and CI

[edhor1608]

Add CI workflow, Biome linting, and doctor preflight script for repo onboarding

• Adds a GitHub Actions CI workflow that runs typecheck, lint, doctor, and fast tests on PRs and pushes to main using Bun 1.3.6 and ffmpeg.
• Introduces src/cli/doctor.ts to validate the local toolchain (Bun, ffmpeg, ffprobe), fixture presence, and writable directories, exiting non-zero on failure.
• Adds biome.json with recommended lint rules and noExplicitAny as an error; updates package.json with lint, typecheck, check, test:fast, and test:ci scripts with explicit 30s timeouts.
• Fixes loadRuleset in src/domain/rules.ts to resolve the ruleset path relative to the module file rather than process.cwd(), and adds validation for required top-level keys.
• Fixes PPM parsing in tests/helpers/image.ts to skip comment lines and strictly validate pixel count; diffRgb.meanChannelDelta now reports per-pixel delta (3× larger than before).
• Behavioral Change: loadRuleset now throws if profiles or white_canvas keys are missing, and resolves config from the module path — callers relying on CWD-relative resolution will break.

^{Macroscope summarized 2e64b0d.}

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⚙️ Run configuration

Configuration used: Organization UI

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Run ID: 7990cb25-0db5-4f5c-bc3a-114b8c722365

📥 Commits

Reviewing files that changed from the base of the PR and between c019724 and 2e64b0d.

⛔ Files ignored due to path filters (1)

• bun.lock is excluded by !**/*.lock

📒 Files selected for processing (7)

• .github/workflows/ci.yml
• AGENTS.md
• README.md
• biome.json
• docs/repo_refresh_audit.md
• package.json
• src/cli/doctor.ts

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[edhor1608]

• test: update report workflow snapshots #55
• feat: add consistent cli help #54
• refactor: split media inspector parsers #53
• test: replace bulky pixel snapshots #52
• fix: cap benchmark confidence to measured evidence #51
• feat: add upload workflow report checks #50
• chore: quiet lint gate output #49
• test: isolate integration output files #48
• fix: validate config files deeply #47
• refactor: route media subprocesses through adapter #46
• refactor: share CLI argument parsing #45
• chore: replace legacy agent guide #44
• fix: load export profiles from module path #43
• chore: add repo refresh onboarding and CI #42 👈 (View in Graphite)
• fix: harden config and image helper loading #41
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[chatgpt-codex-connector]

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Reviewed commit: 2e64b0d6ff

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[chatgpt-codex-connector]

Enforce minimum Bun version in doctor checks

The new preflight reports Bun as healthy whenever Bun.version is non-empty, so unsupported versions (for example Bun 1.2.x) still pass even though the repo prerequisites require Bun 1.3+. In that scenario bun run doctor gives a false green signal and users can proceed into later failures caused by version mismatch; the check should parse and compare the semantic version against the minimum supported version.

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