fix: complete the 0.2.0 changelog — security, performance, model catalog

[saucam]

The 0.2.0 changelog entry (#116) only cataloged the protocol/packages train and missed ten PRs that also ship in v0.2.0: the security fixes (#91 untrusted-content sanitization, #93 cross-tenant memory disclosure — now under a proper Security heading per Keep-a-Changelog), the performance run (#94–#99), and the model-catalog work (#78, #79).

Docs-only. Merge before tagging v0.2.0 so the tagged tree carries the complete history.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Security

  • Improved handling of untrusted content in terminal and markdown-rendered links and images.
  • Strengthened workspace isolation to reduce the risk of cross-tenant memory exposure.

• Performance

  • Improved model selection refresh behavior in the web app.
  • Reduced startup and resume slowdowns by limiting transcript growth and removing unnecessary background work.
  • Optimized memory recall and web streaming for faster, smoother interactions.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: b0a4afb4-ad48-41fa-9b2c-278d4388a7b9

📥 Commits

Reviewing files that changed from the base of the PR and between 57327a0 and 770f129.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

This PR updates CHANGELOG.md with new release notes for version 0.2.0, adding Security and Performance sections documenting model catalog persistence, security fixes for untrusted content sanitization and tenant-scoped workspace IDs, and various performance improvements to the daemon and Web clients.

Changes

Changelog Documentation

Layer / File(s)	Summary
Security and Performance release notes CHANGELOG.md	Adds 0.2.0 entries covering live model catalog persistence, sanitization of untrusted-content sinks, tenant-scoped workspace IDs, Web model-picker refresh, daemon event-loop unblocking, bounded transcript handling, memory recall caching/single-flight improvements, and Web streaming optimizations.

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

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main change: completing the v0.2.0 changelog with security, performance, and model catalog notes.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/changelog-v0.2.0-complete

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.76%. Comparing base (57327a0) to head (770f129).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #117   +/-   ##
=======================================
  Coverage   77.76%   77.76%           
=======================================
  Files          79       79           
  Lines       12438    12438           
=======================================
  Hits         9672     9672           
  Misses       2766     2766           

Flag	Coverage Δ
daemon	77.76% <ø> (ø)

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