chore(release): v0.15.0 — context-pack quality signals

[mohanagy]

Summary

Cuts the v0.15.0 release covering the quality-signals slice train from #78, #81, #74 (all merged via PR #121).

• Bumps package.json from 0.14.0 → 0.15.0
• Adds the [0.15.0] entry to CHANGELOG.md
• Updates README roadmap (3 items flipped to ✅)

What's in v0.15.0

Context-pack quality diagnostics (#78):

• computeContextPackDiagnostics(pack) scorer with 9 weighted rules
• Deterministic quality_score (0–1), severity-ordered warnings, raw signals
• Wired into the stdio context_pack response (explain branch + delta branch)

Delta-only context packs via stdio (#81):

• delta_session_id parameter on context_pack
• New MCP tool context_pack_session_reset
• Per-MCP-process LRU session store (256 sessions)
• Returns referenced_ids[] + bytes_saved so the agent can resolve dropped nodes from session state

Value-per-token budget selector (#74):

• selectByValuePerToken(candidates, options) density-greedy selector
• Deterministic tie-breaking, per-candidate ranking with rank/density/included
• Pure helper — adopting inside retrieve.ts is a follow-up once we have a benchmark

Deferred to v0.16

• Better PR-impact coverage scoring #79 PR-impact coverage calibration (needs real PRs)
• Cache-aware prompt layout to minimize Claude cache invalidation #80 cache-aware prompt-layout measurement (sort_key bands already shipped earlier)
• Add multi-resolution context representations for nodes and slices #76 multi-resolution context representations (new representation layer)

Test plan

• npm run typecheck clean
• npm run build clean
• npm run test:run — 1761/1761 pass (103 files)
• CHANGELOG and README roadmap updated
• After merge: tag v0.15.0 and npm publish (you handle publish per pattern)

Summary by CodeRabbit

• New Features

  • Context-pack quality diagnostics for assessing reliability
  • Delta-only context packs optimized for multi-turn sessions
  • Value-per-token budget selector helper

• Documentation

  • Updated README roadmap with specific planned features
  • Added v0.15.0 release notes to CHANGELOG

• Chores

  • Version bump to v0.15.0

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 2ab3962f-9f3b-4966-8269-3c92328744cc

📥 Commits

Reviewing files that changed from the base of the PR and between 0e8df5a and b8666a5.

📒 Files selected for processing (3)

• CHANGELOG.md
• README.md
• package.json

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📝 Walkthrough

Walkthrough

This PR documents the v0.15.0 release by updating the package version number, adding a changelog entry describing three new features (context-pack quality diagnostics, delta-session context packs, and value-per-token budget selection), and refining the README roadmap to match those features.

Changes

v0.15.0 Release Documentation

Layer / File(s)	Summary
Version Bump package.json	Package version is updated from 0.14.0 to 0.15.0.
Release Notes CHANGELOG.md	A new 0.15.0 release entry documents three features: computeContextPackDiagnostics(pack) for quality analysis, delta-session context packs via delta_session_id with MCP reset support, and selectByValuePerToken(...) budget selector. Release is framed as "quality-signals" with several items deferred to v0.16.
Roadmap Refinement README.md	Roadmap section is updated with three specific planned items: delta-only context packs using delta_session_id, context-pack quality diagnostics including quality_score and structural warnings, and a budgeted value-per-token selection helper, replacing the previous generic delta-only bullet.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• mohanagy/graphify-ts#38: Related release bump PR that similarly edits CHANGELOG.md and updates package.json version.
• mohanagy/graphify-ts#67: Related PR that also updates README roadmap and CHANGELOG to document the same planned features (delta_session_id, diagnostics, selectByValuePerToken).

Poem

🐰 A rabbit hops with glee,
Version bumps to 0-15-free!
Quality signals shine so bright,
Diagnostics gleam with measured light,
Roadmaps dance, features take flight! 🚀

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the primary change: a v0.15.0 release focused on context-pack quality signals, which aligns with the changeset of version bump, CHANGELOG entry, and README updates.
Description check	✅ Passed	The description provides comprehensive context covering what changed, what's included in v0.15.0, deferred items, and test results. Testing checklist is marked with completion status (checkmarks and cross), and docs/roadmap updates are confirmed. All template sections are addressed.
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.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release/v0.15.0

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