* test(#3606): pin hook-kind coverage in the wired guard
* fix(#3606): validate hook-kind coverage at call sites and dispatch generically
* fix(#3606): address review - segment-granular narrowing, zero-coverage diagnosis, quick.md, fragment extraction
* fix(#3606): drop stale shrink-ack, export HOOK_GROUP_KINDS, dedupe scanner regex
* chore(#3606): regenerate install-tree fixtures for new wave-post fragment
* chore(#3606): sync canonical launcher preamble into new fragment
* fix(#3606): keep fragment preamble ahead of first gsd_run mention
* fix(#3606): revert sync script's preamble move in explore.md
* chore(#3606): regenerate derived manifests post-rebase
* chore(#3606): allowlist peer test files - base was red on the count lane
* chore(#3606): regenerate inventory for peer's verify-command-grounding doc
* chore(#3606): grounding test maps to its own module by longest prefix
* chore(#3606): backfill changeset pr number
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Co-authored-by: sim <sim@local>
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