fix(cli): enforce zero debt score thresholds

[eduardbar]

Refs #42

Summary

• Enforce explicit --min-score 0 for scan and CI commands.
• Preserve omitted and positive threshold semantics.
• Emit JSON, Markdown, AI, SARIF, and human output before returning the correct failing exit code.
• Add integration coverage for zero, exact, and positive thresholds.

Verification

• Focused tests: 3/3
• Full suite: 349/349
• Build
• Runtime policy and docs drift
• Real score-4 self-scan correctly fails --min-score 0
• Empty fixture with score 0 passes --min-score 0
• No rule weights or scoring logic changed

Notes

This makes the zero-debt gate honest; it does not change the current score or suppress findings.

[vercel]

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[github-actions]

drift trust

drift trust

• Trust Score: 55/100
• Merge Risk: HIGH
• Target: /home/runner/work/drift/drift

Diff signals

• Base ref: origin/master
• Diff status: NEUTRAL
• Score delta: +0
• Issues: +0 new / -0 resolved
• Trust adjustment: +0 penalty / -0 bonus (net +0)

Top reasons

• Error-level issues: 9 error issue(s) increase merge volatility. (impact 22)
• Highest-risk file: /home/runner/work/drift/drift/site/src/App.jsx has hotspot risk 70/100. (impact 11)
• Maintenance hotspots: Maintenance risk is MEDIUM (38/100). (impact 10)
• Drift score pressure: Repository drift score is 4/100. (impact 2)

Fix priorities

• feat(review): drift review command with PR comment output #1 magic-number (info, x65, effort: low) - Address this rule in the highest-scored files first.
• feat(score): repository quality score breakdown in scan/json #2 large-function (error, x7, effort: high) - Extract smaller functions to reduce review complexity.
• feat(ai): ai_likelihood and files_suspected in AI output #3 unused-export (warning, x10, effort: medium) - Address this rule in the highest-scored files first.
• feat(architecture): configurable architecture rules in drift.config.ts #4 large-file (error, x2, effort: high) - Split monolithic files by responsibility before merge.
• feat(map): drift map command to generate architecture.svg #5 no-return-type (info, x11, effort: low) - Address this rule in the highest-scored files first.

drift review

drift review

ℹ️ No drift changes detected against base ref.

• Base ref: origin/master
• Score delta: +0
• New issues: 0
• Resolved issues: 0

File breakdown

• No file-level deltas detected