docs(04-04): complete Pipeline schemas and class plan

.planning/STATE.md

@@ -4,14 +4,14 @@ milestone: v1.0
 milestone_name: milestone
 current_plan: 3
 status: executing
-stopped_at: Completed 04-analysis-orchestration-04-03-PLAN.md
-last_updated: "2026-03-13T15:33:56.517Z"
+stopped_at: Completed 04-analysis-orchestration-04-04-PLAN.md
+last_updated: "2026-03-13T15:39:34.243Z"
 last_activity: 2026-03-13
 progress:
   total_phases: 4
   completed_phases: 3
   total_plans: 12
-  completed_plans: 10
+  completed_plans: 11
   percent: 8
 ---
 
@@ -63,6 +63,7 @@ Progress: [█░░░░░░░░░] 8%
 | Phase 04-analysis-orchestration P01 | 5min | 3 tasks | 6 files |
 | Phase 04-analysis-orchestration P02 | 7min | 3 tasks | 4 files |
 | Phase 04-analysis-orchestration P03 | 7min | 3 tasks | 4 files |
+| Phase 04-analysis-orchestration P04 | 3min | 2 tasks | 3 files |
 
 ## Accumulated Context
 
@@ -93,6 +94,9 @@ Recent decisions affecting current work:
 - [Phase 04-02]: Text content downloaded and saved as Markdown with YAML frontmatter
 - [Phase 04-03]: AnalyzeProcessor uses lazy import for DeepAnalyzer to avoid dependency issues
 - [Phase 04-03]: Analysis reports saved as Markdown with YAML frontmatter generated by generate_frontmatter()
+- [Phase 04-analysis-orchestration]: Pipeline uses sequential execution for simplicity and debuggability
+- [Phase 04-analysis-orchestration]: Processor STEP_NAME validation ensures only configured steps run
+- [Phase 04-analysis-orchestration]: Content directory naming: {platform}_{content_id}
 
 ### Pending Todos
 
@@ -108,6 +112,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-13T15:33:56.515Z
-Stopped at: Completed 04-analysis-orchestration-04-03-PLAN.md
+Last session: 2026-03-13T15:39:34.242Z
+Stopped at: Completed 04-analysis-orchestration-04-04-PLAN.md
 Resume file: None