test(pipeline): complete automated test suite for the pipeline feature

Adds ~115 tests pinning the Automated Workflows feature end to end:

- tests/test_pipeline.py (+43): per-adapter summary correctness on known
  inputs, multi-step data flow, error stop/continue contract, empty /
  single-column / all-disabled edges, dict+file serialization round-trips,
  recommended_pipeline(include=…), and a synthesized demo integration run.
- tests/test_cli_pipeline.py (new, 21): --recommend, dry-run-by-default,
  --apply output CSV + audit JSON, --steps, --strict abort, arg validation,
  --continue-on-error vs halt, and a save→load round-trip. Invokes the Typer
  app directly to bypass the license guard (house pattern).
- tests/gui/test_pipeline_builder.py (+9): reorder ▲/▼, disabled edge
  buttons, disabled-step persistence across reorder, restore-recommended,
  Advanced JSON export/import, and per-tool Configure panels emitting the
  correct option dicts (AppTest).
- tests/gui/test_pipeline_phrasing.py (new, 30): step_phrase/step_status and
  the adapter-key→friendly-name bridge as pure functions, incl. pluralization,
  column prose, and warn/error status derivation.

Full suite: 2565 passed, 91 skipped. No product bugs surfaced. Documents the
coverage in docs/DEVELOPER.md (test tree + a pipeline-coverage note).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/DEVELOPER.md

@@ -352,6 +352,8 @@ tests/
 ├── test_analyze.py · test_normalize.py · test_text_clean.py
 ├── test_format_standardize.py
 ├── test_format_standardize_corpus.py  # 199-row buyer corpus
+├── test_pipeline.py                   # pipeline engine: adapters, run, validate, serialize
+├── test_cli_pipeline.py               # pipeline CLI: recommend/apply/strict/audit
 ├── test_audit_fixes.py · test_errors.py · test_fixes_unit.py
 ├── test_corpus.py · test_encodings_corpus.py · test_fixtures_sweep.py
 ├── test_cli.py · test_cli_*.py · test_e2e.py · test_install.py
@@ -365,10 +367,27 @@ tests/
     ├── test_workflows.py              # happy path per Ready tool
     ├── test_dedup_review.py           # match-group card interactions
     ├── test_advanced_panels.py        # config_panel widgets
+    ├── test_pipeline_builder.py       # module-card builder: cards, reorder, JSON, run
+    ├── test_pipeline_phrasing.py      # step_phrase/step_status + name bridge (pure fns)
     ├── test_errors.py                 # malformed-upload error paths
     └── test_findings_panel.py         # analyzer findings rendering
 ```
 
+### Pipeline (Automated Workflows) coverage
+
+The pipeline feature is pinned end to end across four files (~115 tests):
+`test_pipeline.py` (core engine — every adapter's summary numbers, step
+data-flow, error stop/continue, empty/single-column/all-disabled edges,
+dict + file serialization round-trips, `recommended_pipeline(include=…)`,
+soft-dependency validation), `test_cli_pipeline.py` (CLI — `--recommend`,
+dry-run-by-default, `--apply` output + audit JSON, `--steps`, `--strict`,
+`--continue-on-error`, arg validation, save→load round-trip),
+`test_pipeline_builder.py` (the visual builder via AppTest — card seeding,
+toggle, reorder ▲/▼, add/remove, restore-recommended, Advanced JSON
+import/export, per-tool Configure panels emitting the right option dicts),
+and `test_pipeline_phrasing.py` (the plain-English `step_phrase`/`step_status`
+helpers and the adapter-key→friendly-name bridge as pure functions).
+
 ### GUI test layer
 
 GUI tests drive pages with `streamlit.testing.v1.AppTest` —