docs: add wait-for-checks CLI command, ADR-0002, update architecture docs

Phase 1e-f of REFACTORING-PLAN.md:

- Register `devx ci wait-for-checks` in cli.py with test coverage
- Add ADR-0002 documenting the ansible_checks consolidation and
  wait_for_checks extraction decisions
- Update AGENTS.md package structure to reflect ansible_checks/
  subpackage and deprecated ci/discover_runners wrapper
- Update docs/user/cli-commands.md with wait-for-checks documentation
  and discover-runners deprecation notice
- Update docs/tech/architecture.md with new modules and canonical
  discover_runners location
- Update docs/mapping.json with ADR entries

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

docs/user/cli-commands.md

@@ -83,6 +83,11 @@ devx ci detect-release-commit
 
 ### `devx ci discover-runners`
 
+> **Deprecated:** Use `devx molecule discover-runners` instead. This
+> command is a thin wrapper that re-exports the canonical implementation
+> from `devx.molecule.discover_runners`. It will be removed in a future
+> release.
+
 Discover available Gitea Actions runners for dynamic job distribution.
 Queries the Gitea API for registered runners at repository, organization, and
 instance (administrator) levels. Falls back to `MOLECULE_RUNNERS` repo variable or
@@ -315,6 +320,32 @@ devx ci validate-commit-msg commit-msg.txt --branch master
 Options:
 - `--branch <branch>` — override branch detection (for CI use)
 
+### `devx ci wait-for-checks`
+
+Wait for Gitea Actions jobs to complete by polling the API. Used by
+auto-merge jobs that need to wait for parallel jobs (for example molecule-tests)
+before proceeding. Replaces inline shell polling in workflow YAML with
+a reusable, testable Python module.
+
+Exit codes:
+- `0` — all matching jobs completed successfully
+- `1` — one or more matching jobs failed (when `--require-success` is set)
+- `2` — timeout reached before all jobs completed
+- `3` — API error or no matching jobs found
+
+```bash
+devx ci wait-for-checks --job-name molecule-tests --repo oblachno-oss/grm
+devx ci wait-for-checks --job-name molecule-tests --timeout 1200 --poll-interval 10
+devx ci wait-for-checks --job-name molecule-tests --no-require-success
+```
+
+Options:
+- `--job-name <prefix>` — job name prefix to match (required)
+- `--repo <owner/name>` — repository (default: `$GITHUB_REPOSITORY`)
+- `--timeout <seconds>` — max wait time (default: 1200 = 20 min)
+- `--poll-interval <seconds>` — seconds between polls (default: 10)
+- `--require-success / --no-require-success` — exit 1 if a job failed (default: yes)
+
 ### `devx ci cancel-superseded-runs`
 
 Cancel in-flight CI runs for the same PR branch when a new push triggers