spec: README.md — spec-index titles match the spec headers

[JarbasAl]

🤖 Auto-generated by Claude Fable 5 (claude-fable-5) via Claude Code — NOT human-reviewed. Verify before acting. Cross-spec citations were model-verified against dev source; behavior-change sections need owner judgment.

Aligns the README spec index with each spec file's own header title (the index drops the trailing "Specification" by convention):

• OVOS-SESSION-1 — "Session Carrier Wire Shape" → "Session" (session-1.md is the Session Specification).
• OVOS-INTENT-4 — "Intent and Entity Registration" → "Intent and Entity Registration Bus Contract" (the file's full header title).

Follow-up commit: the index Version column was also re-checked against every spec header on the rebased tree. OVOS-MSG-1, OVOS-TRANSFORM-1, and OVOS-OCP-1 had shipped as Version 2 but the index still listed 1 — bumped all three to 2 to match. All other rows re-verified clean.

Not fixed here (out of scope; each lands in its own per-file PR): the stale in-body citation "Session Carrier Wire Shape Specification" for OVOS-SESSION-1 still appears in persona.md, common-query.md, fallback.md, session-2.md, intent-context.md, and converse.md, plus the CHANGELOG.md section heading.

Non-normative — no CHANGELOG entry.

Merge order: this PR should merge BEFORE #54 (user-id-1) — #54 touches adjacent lines in the same README index table and its own description notes the README conflict should resolve by merging this PR first.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation
  • Updated the README specification index with renamed documentation and revised links.
  • Updated listed specification versions for messaging, sessions, transformations, and OCP.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: cac60a49-ea8b-43eb-9e87-b001194a6b49

📥 Commits

Reviewing files that changed from the base of the PR and between f73c58d and 9a71e25.

📒 Files selected for processing (1)

• README.md

📝 Walkthrough

Walkthrough

The README specification index updates the INTENT-4 title, MSG-1 and SESSION-1 references, and the compatibility versions for TRANSFORM-1 and OCP-1.

Changes

Specification index

Layer / File(s)	Summary
Update specification index entries README.md	The index updates the INTENT-4 title, MSG-1 and SESSION-1 entries, and raises the TRANSFORM-1 and OCP-1 compatibility versions from 1 to 2.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the README spec-index title alignment, which is a primary change in the pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch spec/readme-index

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