Summary

Improve Android chat UX in one pass:

• restore incremental assistant text streaming
• switch chat markdown rendering to CommonMark + GFM extensions
• bump Android dependencies to stable newer versions

Changes

• Fix streaming event filtering in ChatController and consume chat delta updates.
• Replace regex markdown parser with AST-based renderer supporting headings, lists, blockquotes, tables, task markers, code blocks, and inline formatting.
• Add commonmark + GFM extension dependencies.
• Bump stable deps only:
  • compose BOM 2026.02.00
  • navigation compose 2.9.7
  • kotlinx serialization json 1.10.0
  • kotest 6.1.3
  • robolectric 4.16.1

Validation

• cd apps/android && ./gradlew :app:compileDebugKotlin

Greptile Summary

This PR restores incremental chat streaming and upgrades markdown rendering to use a proper CommonMark AST parser with GFM extensions. The streaming fix adds delta state handling in ChatController and corrects session filtering from runId to sessionKey. The markdown renderer now supports headings, lists (including task lists), blockquotes, tables, code blocks, and inline formatting through the commonmark library instead of brittle regex patterns.

Confidence Score: 4/5

• This PR is safe to merge with low risk - dependency updates are stable versions and code changes restore existing functionality
• The streaming fix is straightforward (adding missing delta handler), markdown refactor replaces fragile regex with a mature AST parser, and all dependency bumps are to stable releases with minor version increments. No breaking changes or risky patterns detected.
• No files require special attention

_{Last reviewed commit: 3523b0f}