Break Mode Logging Integration for Telemetry

[toddysm]

Summary

Add break mode logging integration to the telemetry system, as defined in Step 8 of specs/telemetry-enhancements.md Section 4.

This was deferred from #34 (PR #37) because break mode middleware is not yet implemented.

Acceptance Criteria

• Add BreakRuleEntry dataclass to libs/decorators/metrics.py
• Add break_rule_log: list[BreakRuleEntry] field to TelemetryConfig
• Add * Break: output lines to format_curl_debug() when break rules are applied to a request
• Add break row type to print_telemetry_block() text renderer
• Add break_rules_applied field to JSON debug_call and scenario events
• Sensitive value redaction for auth-related break rule mutations using redact_header_value()
• Clear break_rule_log alongside method_timings after rendering
• Unit tests for all rendering paths with synthetic BreakRuleEntry data

Design Reference

See specs/telemetry-enhancements.md Section 4: Break Mode Logging Integration.

Expected text output in --debug-calls:

* Break: invalid_content_type — replaced Content-Type
*   original: application/vnd.oci.image.manifest.v1+json
*   mutated:  text/plain

Expected telemetry block row:

     break  invalid_content_type                     1 applied

Files to Create/Modify

• libs/decorators/metrics.py — Add BreakRuleEntry dataclass
• libs/decorators/__init__.py — Add break_rule_log to TelemetryConfig, export BreakRuleEntry
• libs/decorators/call_details.py — Add break rule lines to format_curl_debug() and format_curl_debug_json()
• libs/decorators/output.py — Add break row rendering to text and JSON renderers
• libs/decorators/scenario.py — Pass break entries to print_telemetry_block()
• tests/test_break_mode_telemetry.py — New test file

Dependencies

• Break mode middleware implementation (will populate break_rule_log during request processing)

References

• specs/telemetry-enhancements.md Section 4
• PR Enhanced Telemetry and Debug Features #37 (parent implementation)