docs: adopt doctrine project manifest

[shtse8]

Summary

• Add PROJECT.md and .doctrine/project.json for doctrine project-control-plane adoption.
• Add a thin AGENTS.md runtime adapter pointing agents to SylphxAI/doctrine and repo-local facts.
• Record Bump package/action boundaries, required CI context, forward-only npm recovery, package release control-plane facts, and adoption gaps.

Validation

• jq empty .doctrine/project.json
• git diff --check
• python3 /Users/kyle/.doctrine/scripts/project-control-plane-audit.py --local . --fail-on-drift --json -> PRESENT

Scope

Docs/control-plane only. No runtime, CI, deployment, dependency, secret, or infrastructure changes.

[shtse8]

Control-plane branch audit is PRESENT, but PR #72 is blocked by pre-existing repo-wide Biome failures unrelated to the docs/control-plane manifest slice.\n\nEvidence:\n- Remote branch audit: python3 /Users/kyle/.doctrine/scripts/project-control-plane-audit.py --repo SylphxAI/bump --ref codex/project-manifest-adoption --fail-on-drift --json => PRESENT.\n- GitHub Actions run: https://github.com/SylphxAI/bump/actions/runs/27946720444\n- Failed job: test / Lint; runner did execute the job.\n- First failures include existing source/test issues: src/cli.ts import ordering, src/commands/add.ts formatter/style findings, tests/release.test.ts unused import, src/commands/pr.ts unused imports/parameters, and additional Biome diagnostics.\n\nClassification: repo-local CI hygiene blocker, not a doctrine manifest drift. I am leaving branch protection intact and not bypassing the required test context.