infospace: process book-4-chapter-02

Extract entities, map to VSM, and synthesize analysis.

examples/infospace-with-history/output/processing-log.yaml

@@ -808,3 +808,44 @@
     finish_reason: stop
     duration_seconds: 86.4
     error: null
+- source_id: book-4-chapter-02
+  processed_at: '2026-02-19T20:19:39Z'
+  provider: openrouter
+  model: arcee-ai/trinity-large-preview:free
+  success: true
+  total_prompt_tokens: 52734
+  total_completion_tokens: 11880
+  total_cost: 0.0
+  total_duration_seconds: 385.6
+  total_retries: 0
+  stages:
+  - stage: extract-entities
+    retries: 0
+    provider: openrouter
+    model: arcee-ai/trinity-large-preview:free
+    prompt_tokens: 21965
+    completion_tokens: 5744
+    cost: 0.0
+    finish_reason: unknown
+    duration_seconds: 186.8
+    error: null
+  - stage: map-to-vsm
+    retries: 0
+    provider: openrouter
+    model: arcee-ai/trinity-large-preview:free
+    prompt_tokens: 8585
+    completion_tokens: 443
+    cost: 0.0
+    finish_reason: unknown
+    duration_seconds: 108.8
+    error: null
+  - stage: synthesize-analysis
+    retries: 0
+    provider: openrouter
+    model: arcee-ai/trinity-large-preview:free
+    prompt_tokens: 22184
+    completion_tokens: 5693
+    cost: 0.0
+    finish_reason: unknown
+    duration_seconds: 90.0
+    error: null