docs: restore BridgeLayer governance baseline

[attaullahfayyaz4u-ux]

Summary

Restores the missing BridgeLayer governance documentation baseline after the audit-blocker cleanup PR was merged and post-merge checks revealed that expected governance files were absent from the current working tree.

Changes

• Adds ROADMAP.md

• Adds docs/SPECIFICATION.md

• Updates docs/README.md

• Updates docs/getting-started.md

Validation

Local validation before commit:

• git diff --check: passed after whitespace cleanup

• git diff --cached --check: passed

• npm run lint: 0 errors, 3 known non-blocking warnings

• npm test -- --runInBand: 43/43 passing

• npx tsc --noEmit: expected no-output pass before commit

Scope Included

• Governance baseline restoration

• Roadmap restoration

• Specification restoration

• Docs README and getting-started refresh

Scope Excluded

• No runtime logic changes

• No model migration

• No dependency changes

• No release tag

• No direct push to main

---

[attaullahfayyaz4u-ux]

Extended PR Title

docs: restore BridgeLayer governance baseline and re-establish roadmap/spec control

Extended PR Description

Governance Context

After PR #1 was merged and post-merge verification passed, the next governance closure step checked for required roadmap/specification files. ROADMAP.md and docs/SPECIFICATION.md were missing from the active working tree even though they existed in the previously shared repository snapshot.

This PR restores those governance baseline files without touching runtime logic.

Documentation Impact Matrix

File | Impact -- | -- ROADMAP.md | REQUIRED_UPDATE — restores living roadmap and milestone tracking baseline docs/SPECIFICATION.md | REQUIRED_UPDATE — restores governance/specification control document docs/README.md | REQUIRED_UPDATE — aligns docs index with restored documentation set docs/getting-started.md | REQUIRED_UPDATE — refreshes onboarding guidance from restored baseline

Benchmark / Test Impact

No benchmark behavior is changed.

Existing test suite remains passing.

Validation Evidence

Local validation before commit:

• git diff --check: passed after whitespace cleanup

• git diff --cached --check: passed

• npx tsc --noEmit: no-output pass expected/confirmed before commit

• npm run lint: 0 errors, 3 known non-blocking warnings

• npm test -- --runInBand: 43/43 passing

Scope Included

• Governance baseline restoration

• Roadmap restoration

• Specification restoration

• Docs README update

• Getting-started documentation refresh

Scope Excluded

• No runtime logic changes

• No model migration

• No dependency changes

• No release tag

• No direct push to main

Known Risks / Deferrals

• Existing lint warnings remain tracked and non-blocking.

• Existing Anthropic model deprecation warning remains tracked as a future dependency/model migration task.

• This PR restores governance docs from the known repo snapshot; it does not independently redesign governance content.

Timeline Window

Estimated duration: short documentation restoration PR.

Value Added

Restores repo governance closure capability by bringing roadmap and specification files back into the active GitHub repository state.

Completion Contribution

Contributes to repository governance completeness and enables future milestones to be tracked against roadmap/spec requirements.

Rollback / Revert Notes

Safe to revert with a standard Git revert if restored governance docs are later replaced by a stronger baseline.

No runtime behavior depends on this PR.

ATTA Status

ACKNOWLEDGED / TRACKED / TIMESTAMPED / VALIDATED_LOCALLY / PR_PENDING

GBSE Verdict

CONDITIONAL_PASS — merge only after GitHub PR checks pass and no unexpected file changes appear.