docs(04-02): complete DownloadProcessor plan
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@@ -4,14 +4,14 @@ milestone: v1.0
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milestone_name: milestone
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current_plan: 3
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status: executing
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stopped_at: Completed 04-analysis-orchestration-04-01-PLAN.md
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last_updated: "2026-03-13T15:15:58.972Z"
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stopped_at: Completed 04-analysis-orchestration-04-02-PLAN.md
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last_updated: "2026-03-13T15:25:16.645Z"
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last_activity: 2026-03-13
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progress:
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total_phases: 4
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completed_phases: 3
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total_plans: 12
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completed_plans: 8
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completed_plans: 9
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percent: 8
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---
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@@ -61,6 +61,7 @@ Progress: [█░░░░░░░░░] 8%
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| Phase 02-platform-skills P03 | 7min | 3 tasks | 4 files |
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| Phase 02 P02 | 8 | 4 tasks | 7 files |
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| Phase 04-analysis-orchestration P01 | 5min | 3 tasks | 6 files |
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| Phase 04-analysis-orchestration P02 | 7min | 3 tasks | 4 files |
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## Accumulated Context
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@@ -87,6 +88,8 @@ Recent decisions affecting current work:
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- [Phase 02]: Article content fetching as placeholder (requires additional API implementation)
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- [Phase 04-01]: BaseProcessor uses ABC with @abstractmethod for process() method
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- [Phase 04-01]: ParseInput content_id and platform default to empty string (populated after parse)
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- [Phase 04-02]: Video content skipped in download step (handled by ASR in Phase 3)
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- [Phase 04-02]: Text content downloaded and saved as Markdown with YAML frontmatter
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### Pending Todos
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@@ -102,6 +105,6 @@ None yet.
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## Session Continuity
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Last session: 2026-03-13T15:15:58.970Z
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Stopped at: Completed 04-analysis-orchestration-04-01-PLAN.md
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Last session: 2026-03-13T15:25:16.644Z
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Stopped at: Completed 04-analysis-orchestration-04-02-PLAN.md
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Resume file: None
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@@ -0,0 +1,129 @@
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---
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phase: 04-analysis-orchestration
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plan: 02
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subsystem: pipeline-architecture
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tags: [processor, download, metadata, content, tdd, pydantic]
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requires:
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- phase: 01-foundation
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provides: WorkflowStateManager, StepInput/StepOutput schemas
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- phase: 02-platform-skills
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provides: BilibiliAdapter, ZhihuAdapter
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- phase: 04-analysis-orchestration
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plan: 04-01
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provides: BaseProcessor, ParseProcessor
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provides:
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- DownloadProcessor for unified metadata and content downloading
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- DownloadInput/DownloadOutput schemas for download step
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affects: [04-03, 04-04, 04-05]
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tech-stack:
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added: []
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patterns:
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- "TDD workflow: RED (failing tests) -> GREEN (implementation) -> commit"
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- "PlatformAdapter integration for multi-platform support"
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- "Content type discrimination (video vs article)"
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key-files:
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created:
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- kb_pipeline/processors/download.py
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- tests/test_processors/test_download.py
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modified:
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- kb_pipeline/schemas.py
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- kb_pipeline/processors/__init__.py
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key-decisions:
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- "Video content skipped in download step (handled by ASR in Phase 3)"
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- "Text content (article, answer, zhuanlan) downloaded and saved as Markdown"
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- "Metadata and content files follow naming convention: {platform}_{id}_{suffix}"
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- "State recording on success/failure with summary info"
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patterns-established:
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- "DownloadProcessor uses PlatformAdapter for platform-specific operations"
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- "Idempotency: skip step if already completed in workflow state"
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requirements-completed: [MNT-01]
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duration: 7min
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completed: 2026-03-13
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---
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# Phase 04 Plan 02: DownloadProcessor Summary
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**Unified DownloadProcessor for metadata extraction and content downloading across Bilibili and Zhihu platforms**
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## Performance
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- **Duration:** 7 min
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- **Started:** 2026-03-13T15:17:17Z
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- **Completed:** 2026-03-13T15:24:11Z
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- **Tasks:** 3
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- **Files modified:** 4
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## Accomplishments
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- DownloadInput/DownloadOutput schemas with proper validation
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- DownloadProcessor correctly fetching metadata from Bilibili and Zhihu adapters
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- Content downloading for text-based content (article, answer, zhuanlan)
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- Video content marked for ASR processing (not downloaded in this step)
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- State recording on success/failure
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- Module export from kb_pipeline.processors
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Define Download Schemas** - `9d5c3ff`/`1e01236` (test/feat)
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2. **Task 2: Create DownloadProcessor with metadata fetching** - `567bd32`/`fc6fba7` (test/feat)
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3. **Task 3: Add content downloading and __init__.py export** - `ec268f7` (feat)
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**Plan metadata:** pending (docs: complete plan)
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_Note: TDD tasks may have multiple commits (test -> feat -> refactor)_
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## Files Created/Modified
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- `kb_pipeline/processors/download.py` - DownloadProcessor implementation with metadata and content handling
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- `kb_pipeline/processors/__init__.py` - Added DownloadProcessor to exports
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- `kb_pipeline/schemas.py` - Added DownloadInput and DownloadOutput schemas
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- `tests/test_processors/test_download.py` - Comprehensive tests (17 test cases)
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## Decisions Made
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- Video content is not downloaded (handled by ASR in Phase 3)
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- Text content is downloaded and saved as Markdown with YAML frontmatter
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- File naming follows pattern: `{platform}_{content_id}_{suffix}`
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- State recording uses summary format: `title={title}, type={content_type}`
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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- Test mock path needed adjustment: mock `kb_pipeline.processors.base.get_settings` because BaseProcessor.__init__ calls get_settings()
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- Zhihu adapter mock needed AsyncMock for fetch_content method
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- DownloadProcessor provides metadata and content for downstream analysis
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- Video content flow: DownloadProcessor (metadata) -> ASRProcessor (transcription)
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- Article content flow: DownloadProcessor (metadata + content) -> AnalysisProcessor
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---
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*Phase: 04-analysis-orchestration*
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*Completed: 2026-03-13*
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## Self-Check: PASSED
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All files verified:
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- kb_pipeline/processors/download.py
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- kb_pipeline/processors/__init__.py
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- kb_pipeline/schemas.py
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- tests/test_processors/test_download.py
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All commits verified:
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- 9d5c3ff: test(04-02): add failing tests for DownloadInput/DownloadOutput schemas
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- 1e01236: feat(04-02): add DownloadInput and DownloadOutput schemas
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- 567bd32: test(04-02): add failing tests for DownloadProcessor metadata fetching
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- fc6fba7: feat(04-02): implement DownloadProcessor with metadata fetching
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- ec268f7: feat(04-02): add content downloading and module export for DownloadProcessor
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