feat: introduced hashline API redesign with structured operations and LINE#ID format

- Redesigned hashline edit API with new operation names (set, set_range, insert) and structured body parameter accepting string arrays for multiline edits.
- Changed hashline reference format from LINE:HASH to LINE#ID throughout tools and documentation for improved clarity.
- Enhanced insert operation to support optional before/after anchors enabling flexible insertion positioning and boundary echo stripping.
- Made hashline autocorrect heuristics conditional on PI_HL_AUTOCORRECT environment variable for controlled behavior.
- Added benchmark reports for claude-haiku-4-5 and GPT-5.2-Codex models demonstrating hashline edit variant performance.

packages/coding-agent/src/commit/prompts/analysis-system.md

@@ -76,7 +76,6 @@ Call create_conventional_analysis with:
 }
 </output_format>
 
-<examples>
 <example name="feature-with-api">
 {
   "type": "feat",
@@ -146,5 +145,4 @@ Call create_conventional_analysis with:
   "details": [],
   "issue_refs": []
 }
-</example>
-</examples>
+</example>