hooks: 8 remaining P2s from #420's last review passes (watch/replan, progress, wasm serve) #423

Codex findings on #420 after it used its three review-fix rounds (lifecycle hooks, now on development). All are P2. None blocks development, but each should be closed before development → main.

• src/cli/pipeline.zig:1911 (e16ef85): Record WASM hook failures before terminal success
• src/cli/pipeline.zig:195 (0004dc8): Prevent watched hooks from retriggering themselves
• src/cli/pipeline.zig:1429 (0004dc8): Recheck the shader override after before-generate hooks
• src/cli/pipeline.zig:1856 (0004dc8): Keep replanned provider storage alive through shutdown hooks
• src/cli/pipeline.zig:631 (e89b93e): Refresh install state and lock when replanning providers
• src/cli/progress.zig:351 (e89b93e): Clear compiler counters when reporting hook sub-steps
• src/cli/pipeline.zig:1430 (e89b93e): Restore core progress details after before hooks
• src/cli/pipeline.zig:1807 (e89b93e): Skip run hooks when a cross-target launch is skipped

Full text: the review comments on #420 at those commits. Part of #406.

https://claude.ai/code/session_01R2K5sJDL5Msn1uRTkybiDP