[ci] use sccache

[andresilva]

Depends on #3999.

[cloudflare-workers-and-pages]

Deploying monorepo with    Cloudflare Pages

Latest commit:	5139c27
Status:	✅  Deploy successful!
Preview URL:	https://2b975b47.monorepo-eu0.pages.dev
Branch Preview URL:	https://andre-ci-sccache.monorepo-eu0.pages.dev

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[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	commonware-mcp	5139c27	Jun 09 2026, 08:57 PM

[github-actions]

Benchmark results

Tip

✅ PASSED: No benchmark exceeded the regression threshold.

Benchmark comparison table

Benchmark	Baseline (main)	Current	Delta	Threshold	Status
qmdb::merkleize/variant=any::unordered::fixed::mmr keys=10000 ch=false sync=false	1.652 ms	1.673 ms	+1.32%	10.00%	✅ PASS
qmdb::merkleize/variant=current::ordered::fixed::mmb chunk=256 keys=10000 ch=true sync=false	3.315 ms	3.300 ms	-0.45%	10.00%	✅ PASS

Baseline commit(s): 82ece6de86ed

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.07%. Comparing base (fcd0df9) to head (5139c27).
⚠️ Report is 4 commits behind head on main.

@@            Coverage Diff             @@
##             main    #4001      +/-   ##
==========================================
- Coverage   95.09%   95.07%   -0.03%     
==========================================
  Files         531      531              
  Lines      217677   218089     +412     
  Branches     5292     5300       +8     
==========================================
+ Hits       206995   207342     +347     
- Misses       8890     8943      +53     
- Partials     1792     1804      +12     

see 41 files with indirect coverage changes

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