Keep pre-push fast by moving coverage out of the hook

Daily pushes should catch policy and path-aware local failures without making every contributor wait for full coverage. The hook now runs a new quality:push entrypoint that reuses the PR quality gate while skipping coverage; verify, quality:pr, and CI still retain the full coverage gate for PR readiness.

Constraint: Forks and local contributors need a faster default push path
Rejected: Remove coverage from quality:pr | PR readiness and CI still need the ratcheted coverage signal
Confidence: high
Scope-risk: narrow
Directive: Keep pre-push on quality:push; use verify or quality:pr when coverage evidence is required
Tested: bun test scripts/pr/quality-contract.test.ts scripts/git-hooks/install.test.ts
Tested: bun run check:policy
Tested: bun run quality:push
Not-tested: Live provider smoke; intentionally remains opt-in

package.json

@@ -26,6 +26,7 @@
     "quality:verify": "bun run quality:pr",
     "quality:providers": "bun run scripts/quality-gate/providers.ts",
     "quality:pr": "bun run quality:gate --mode pr",
+    "quality:push": "bun run quality:gate --mode pr --skip coverage",
     "quality:baseline": "bun run quality:gate --mode baseline",
     "quality:release": "bun run quality:gate --mode release",
     "quality:smoke": "bun run quality:gate --mode baseline --allow-live --only 'provider-smoke:*' --only 'desktop-smoke:*'",