Fix Math Brain v2 pipeline crashes from undefined variables

[Copilot]

Math Brain v2 pipeline failed on all report generation attempts due to two undefined variable references in src/math_brain/main.js.

Root Causes

Line 199: Referenced non-existent mirrorData variable

// Before: ReferenceError
mirror_data: mirrorData || {},

// After: Removed (already in daily entries)
relational_summary: relationalSummary || null,

Lines 183-206: Transit reports lacked run_metadata object, causing crashes when relationship context was set

// Before: spreading undefined, missing run_metadata
finalOutput = {
  ...finalOutput,  // undefined
  provenance: {...},
};
// Later: finalOutput.run_metadata.relationship_context = ... // TypeError

// After: create once, use for both fields
const metadata = {...createProvenanceBlock(config), ...};
finalOutput = {
  run_metadata: metadata,
  provenance: metadata,  // backward compat
};

Changes

• src/math_brain/main.js: Removed undefined mirrorData reference; ensured run_metadata exists for transit reports
• test/mathbrain-v2-regression.test.js: Added 3 regression tests (transit/foundation/synastry)
• docs/bug-fixes/mathbrain-v2-report-generation-fix-2025-11-13.md: Detailed analysis and verification steps
• .gitignore: Excluded log files
• CHANGELOG.md: Documented fix

Impact

All report types (solo, synastry, transit, foundation) now generate successfully. No breaking changes—both run_metadata and provenance fields maintained for backward compatibility.

Original prompt

Still cannot get a report to generate at all. Says mathbrain v2 failure.

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[DHCross]

@copilot I saw this message on the site itself "Deployment: Metadata unavailable — configure build metadata to populate this section"

[DHCross]

@copilot I see you are using dev ports to test. Probably the only way you can. Make sure it's all the same code being used, not some hybrid beast

[Copilot]

@copilot I saw this message on the site itself "Deployment: Metadata unavailable — configure build metadata to populate this section"

The "Deployment: Metadata unavailable" message is unrelated to this fix. It's a Netlify configuration issue that would require setting up build metadata environment variables (like COMMIT_REF, BUILD_ID) in the Netlify dashboard or build settings. The Math Brain v2 fix itself doesn't affect deployment metadata.

@copilot I see you are using dev ports to test. Probably the only way you can. Make sure it's all the same code being used, not some hybrid beast

The regression tests in test/mathbrain-v2-regression.test.js actually call runMathBrain() directly (unit tests), not via HTTP/dev ports. They test the exact production code that runs when reports are generated. The manual API test I ran during development used localhost:3000 just to verify end-to-end, but the committed test suite ensures no hybrid issues since it imports and tests the actual source code directly.

[DHCross]

Closing as stale (2+ months) - Math Brain v2 pipeline has been stabilized. If crashes persist, please reopen against current main.