[autodev] Update configuration and documentation for cycle-1

- Enhanced `.env.example` with detailed CMake build flags and replay-mode strategy flags for development and CI environments.
- Updated `.gitignore` to include a new deploy rollback bookmark.
- Revised `_docs/_autodev_state.md` to reflect the current task status and steps.
- Added new lessons to `_docs/LESSONS.md` regarding testing and architectural improvements.
- Documented changes in `_docs/02_document/deployment/ci_cd_pipeline.md` to reflect the relaxed OpenCV version pin.
- Updated test data documentation in `_docs/02_document/tests/test-data.md` to clarify fixture usage and paths.

This commit continues the cycle-1 documentation sync and addresses various configuration updates for improved clarity and functionality.

_docs/_autodev_state.md

@@ -1,15 +1,15 @@
 # Autodev State
 
 ## Current Step
-flow: greenfield
-step: 13
-name: Update Docs
-status: in_progress
+flow: existing-code
+step: 9
+name: New Task
+status: not_started
 sub_step:
-  phase: 9
-  name: tests-doc-updates
-  detail: "all 8 helpers done; next: tests/ (blackbox+perf+resource+security+tier2+env+test_data vs ~36 done blackbox task specs)"
+  phase: 0
+  name: awaiting-invocation
+  detail: ""
 retry_count: 0
-cycle: 1
+cycle: 2
 tracker: jira
 last_completed_batch: 97