feat: Enhanced the agent's response quality

[overseek944]

No description provided.

[github-actions]

GEval Quality Gate Results

GEVAL DECISION REPORT (MULTI-CONTRACT)
========================================
Combine contracts rule: worst_case

Signals:
  sql_eval.sql_quality = 3.875
  sql_eval.sql_correctness = 0.75
  e2e_eval.response_quality = 2.25
  e2e_eval.correctness = 0.625

---
Contract file: .geval/contract.yaml
Contract: text2sql-quality-gate @ 1.0.0
Combine rule (policies): worst_case
Per-policy results:
  policies/quality.yaml: REQUIRE_APPROVAL (rules that matched: response_quality_gate) [winner: response_quality_gate]
Combined decision (this contract):
REQUIRE_APPROVAL
First non-PASS: policies/quality.yaml:response_quality_gate
Reason:
Response quality dropped below 2.5/5

======== OVERALL (PR) ========
REQUIRE_APPROVAL
.geval/contract.yaml:policies/quality.yaml:response_quality_gate
Reason:
Response quality dropped below 2.5/5
========================================

✅ Approved By Human: manavpatel
📝 Reason: Looks good enough for beta
🕒 Timestamp: 2026-03-28T19:03:34Z