feat(miner): expose the calibration report as a read-only MCP tool

[oktofeesh1]

Summary

• Adds loopover_miner_get_calibration_report to the miner's stdio MCP server (packages/loopover-miner/bin/loopover-miner-mcp.js), wrapping the existing local prediction-ledger/event-ledger join that already powers loopover-miner calibration --json. No new join/scoring logic — an MCP client can now ask for this miner's own merge/close prediction accuracy without shelling out to the CLI.

Scope

• The PR title follows type(scope): short summary Conventional Commit format, for example fix(api): restore profile access checks.
• This PR is focused and does not mix unrelated backend, UI, MCP, docs, dependency, and deploy changes.
• This follows CONTRIBUTING.md and does not reintroduce GitHub Pages, VitePress, site/, or CNAME.
• I linked a currently open issue this PR resolves (e.g. Closes #123) — a linked open issue is required for every contributor PR.

Validation

• git diff --check
• npm run actionlint
• npm run typecheck
• npm run test:coverage locally; codecov/patch requires ≥99% coverage of the lines AND branches you changed (aim for 100% on your diff so CI variance does not fail near the threshold). Global coverage is a non-blocking trend with a loose 90% backstop, not the gate.
• npm run test:workers
• npm run build:mcp
• npm run test:mcp-pack
• npm run ui:openapi:check
• npm run ui:lint
• npm run ui:typecheck
• npm run ui:build
• npm audit --audit-level=moderate
• New or changed behavior has unit/integration tests for new branches, fallback paths, and sanitizer boundaries

Ran the full local gate via npm run test:ci — green, plus npm audit --audit-level=moderate (0 vulnerabilities). Note: packages/loopover-miner/bin/** is not in the Codecov coverage include glob (only packages/loopover-miner/lib/** is), so this file carries no strict patch-coverage obligation — tests were still written to full parity with the sibling loopover_miner_get_governor_decisions tool's coverage (has-signal branch, no-signal branch, store-ownership invariant), plus a new row in the shared miner-mcp-contract.test.ts invariant table.

Safety

• No secrets, wallet details, hotkeys, coldkeys, user PATs, private keys, raw trust scores, private rankings, or private maintainer evidence are exposed.
• Public GitHub text stays sanitized, low-noise, and does not imply compensation guarantees or optimization tactics.
• Auth, cookie, CORS, GitHub App, Cloudflare, or session changes include negative-path tests.
• API/OpenAPI/MCP behavior is updated and tested where needed.
• UI changes use live API data or real empty/error/loading states, not production mock/demo fallbacks.
• Visible UI changes include a UI Evidence section below with JPG/JPEG or PNG screenshots arranged as organized, captioned, clickable thumbnails. SVG screenshots are not used as review evidence. Review-only screenshots or recordings are not committed to the repository.
• Public docs/changelogs are updated where needed; changelogs are only edited for release-prep PRs.

If any required check was skipped, explain why:

• Auth/CORS and UI boxes are not applicable — this is a local, offline, read-only MCP tool with no auth/session/UI surface (the stdio server has no network listener).

UI Evidence

Not applicable — no visible UI/frontend/docs/extension change beyond the README's MCP tool list, which is covered by the existing miner MCP tool documentation parity test.

Notes

• Follows the same injection-seam (options.initPredictionLedger / options.initEventLedger) and explicit store-ownership finally pattern as the sibling loopover_miner_get_governor_decisions tool.

Closes #5821

[superagent-security]

Superagent didn't find any vulnerabilities or security issues in this PR.

[loopover-orb]

Warning

LoopOver found maintainer review notes

Scoped related-work signals were found for this PR. They are advisory unless the gate reports a blocker.

Readiness score: 57/100

Signal	Result	Evidence	Action
Linked issue	✅ Linked	#5821	No action.
Related work	⚠️ 3 scoped overlaps	Top overlaps are listed below; lower-confidence bulk is hidden.	Review top overlaps.
Change scope	❌ 8/20	High review scope from cached public metadata (1 linked issue).	Add a concise scope and risk note.
Validation posture	❌ 5/25	Preflight is holding this PR: the review lane is unavailable, so it is not ready for automated review.	Await review-lane availability.
Contributor workload	✅ 10/10	Author activity: 55 registered-repo PR(s), 43 merged, 0 issue(s).	No action.
Contributor context	✅ Confirmed Gittensor contributor	oktofeesh1; Gittensor profile; 55 PR(s), 0 issue(s).	No action.
Gate result	⚠️ Advisory only	Advisory only.	No action.

Signal definitions

• Related work = same linked issue, overlapping active PRs, or title/path similarity.
• Change scope = cached public metadata such as size labels, draft state, and review-burden hints.
• Validation posture = whether the PR provides enough public validation/test evidence for maintainer review.
• Contributor workload = public contributor activity and cleanup pressure, not a repo-wide quality failure.
• Contributor context = public GitHub/Gittensor identity context; non-Gittensor status is not a blocker.

Review context

• Author: oktofeesh1
• Role context: outside_contributor
• Public audience mode: oss maintainer
• Lane context: Repository registration is not available in the local LoopOver cache.
• Public profile languages: not available
• Official Gittensor activity: 55 PR(s), 0 issue(s).
• Related work: Titles/paths share 6 meaningful terms. (PR #5905)
• Related work: Titles/paths share 8 meaningful terms. (PR #5906)
• Related work: Titles/paths share 6 meaningful terms. (PR #5905, PR #5906)

Maintainer notes

• Repo lane is not ready for a confident recommendation: Repository registration is not available in the local LoopOver cache.
• Possible duplicate or overlapping work: 3 related open work cluster(s) were detected.

Contributor next steps

• Start here: Review top overlaps.
• Then work through the remaining 5 steps in the Signals table above.

• Re-run LoopOver review

---

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Checked by LoopOver, a quiet PR intelligence layer for OSS maintainers.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.15%. Comparing base (1b62bf0) to head (9abd466).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5909   +/-   ##
=======================================
  Coverage   95.15%   95.15%           
=======================================
  Files         589      589           
  Lines       46695    46695           
  Branches    14902    14902           
=======================================
  Hits        44434    44434           
  Misses       1511     1511           
  Partials      750      750           

Flag	Coverage Δ
shard-1	43.55% <ø> (-0.40%)	⬇️
shard-2	36.17% <ø> (+0.12%)	⬆️
shard-3	31.90% <ø> (-0.15%)	⬇️
shard-4	31.97% <ø> (-0.90%)	⬇️
shard-5	32.39% <ø> (+0.88%)	⬆️
shard-6	44.90% <ø> (+0.35%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
packages/loopover-miner/lib/calibration-cli.js	100.00% <ø> (ø)