[eval][blocked] Wire CR/IR/ER·C2I into score bundle for Demo L4

[cursor]

Problem

UI ADR #38 and eval schema ADR #39 document that CR/IR/ER·C2I metrics are missing from the current score bundle API.

Current State

• L4 card in the Demo UI references:
  • error_root / error_roots / error_root_distribution
  • process.* metrics
  • CR (Correct Ratio), IR (Incorrect Ratio), ER (Error Ratio), C2I (Correct-to-Incorrect) ← 缺失

Impact

Until these fields exist in the score bundle schema:

• Demo L4 card will show dashed placeholders (缺口) for missing metrics
• Full taxonomy visualization is incomplete

Dependencies

This issue depends on:

• NL2SQLBench-aligned eval work from docs: Architecture Decision Record for evaluation score-bundle four-layer taxonomy #39
• Metrics taxonomy finalization from docs: Text2SQL/NL2SQL评估指标目录ADR #40

Action Required

1. Define CR/IR/ER/C2I field schema in score bundle
2. Implement computation in eval pipeline
3. Surface fields via Demo API
4. Update Demo UI to consume real values (remove placeholders)

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Status: 🚫 BLOCKED — needs eval schema contract and implementation from #39/#40

Related:

• UI ADR: docs(adr): four-layer eval L-strip for Demo Run detail #38
• Schema lock ADR: docs: Architecture Decision Record for evaluation score-bundle four-layer taxonomy #39
• Metrics survey: docs: Text2SQL/NL2SQL评估指标目录ADR #40