v0.43.0-alpha

🐛 Fixes

prompts/ and themes/ never backed up via pi.dev extra_paths

_stage_pi_extra_paths had a category_map that omitted prompts and themes,
while the matching _restore_pi_extra_paths listed both. Result: any content added to
~/.pi/agent/prompts/ or ~/.pi/agent/themes/ was never backed up to the private
repo, but restore expected to find it there. Real-world impact: themes/opencode.json
on disk (mtime Jun 21) was not being refreshed in the private repo, leaving a stale
copy from May 21 that would have been restored on rollback. Added both entries to
category_map (src/agent_sync/sync.py:1738-1739).

💄 Refactor

Single-source-of-truth symlinks for ~/.pi/{extensions,themes,prompts}

The dual-path registry entries (~/.pi/agent/X + ~/.pi/X) caused three problems
on every backup: double-load in pi, double-backup in the private repo, and drift
risk between canonical and legacy copies. Resolution:

• ~/.pi/extensions → ~/.pi/agent/extensions
• ~/.pi/themes → ~/.pi/agent/themes
• ~/.pi/prompts → ~/.pi/agent/prompts

Registry reduced to single entries; global_extensions, global_themes, and
global_prompts keys removed. extra_paths.extensions/themes/prompts now
contain only the canonical ~/.pi/agent/... paths.

Hardcoded /Users/cali/.pi/agent/AGENTS.md literals replaced

Two docstring examples in agent_discovery.py and one test fixture in
test_publish_agents.py had the literal username path. Replaced with
Path.home() / ".pi/agent/AGENTS.md" form so CI on ubuntu-latest (no
/Users/cali/) exercises the same contract.

📚 Docs

AGENTS.md — dev workflow + no-symlinks clarification

• Dev Workflow section: which agent-sync check, override recipe, uv-based
  bootstrap. Documents the workflow gap that allowed the recent "tests pass against
  OLD code" incident to go undetected for several commits.
• No Symlinks mandate scope clarified: applies to agent-sync's sync method,
  not to user-side FS symlinks used to avoid dual-path duplication.

🧪 Tests

• 562/562 passing (+3 from new test_sync_stage.py covering prompts/themes staging)

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