[AZ-189] Update coding and testing rules for clarity and consistency

- Revised coding standards to emphasize readability, meaningful comments, and test verification.
- Adjusted test coverage thresholds to 75% for business logic and clarified expectations for test scenarios.
- Enhanced guidelines for handling skipped tests, emphasizing the need for investigation and resolution.
- Updated commit message format and length requirements for better adherence to Git conventions.

Made-with: Cursor

.cursor/skills/research/references/quality-checklists.md

@@ -10,6 +10,12 @@
 - [ ] Every citation can be directly verified by the user (source verifiability)
 - [ ] Structure hierarchy is clear; executives can quickly locate information
 
+## Decomposition Completeness
+
+- [ ] Domain discovery search executed: searched "key factors when [problem domain]" before starting research
+- [ ] Completeness probes applied: every probe from `references/comparison-frameworks.md` checked against sub-questions
+- [ ] No uncovered areas remain: all gaps filled with sub-questions or justified as not applicable
+
 ## Internet Search Depth
 
 - [ ] Every sub-question was searched with at least 3-5 different query variants