infospace: process book-1-chapter-03

Extract entities, map to VSM, and synthesize analysis.

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

@@ -0,0 +1,31 @@
+- source_id: book-1-chapter-03
+  processed_at: '2026-02-19T14:04:57Z'
+  provider: openrouter
+  model: arcee-ai/trinity-large-preview:free
+  success: true
+  total_prompt_tokens: 28609
+  total_completion_tokens: 9000
+  total_cost: 0.0
+  total_duration_seconds: 346.1
+  total_retries: 0
+  stages:
+  - stage: map-to-vsm
+    retries: 0
+    provider: openrouter
+    model: arcee-ai/trinity-large-preview:free
+    prompt_tokens: 10373
+    completion_tokens: 6000
+    cost: 0.0
+    finish_reason: length
+    duration_seconds: 171.0
+    error: null
+  - stage: synthesize-analysis
+    retries: 0
+    provider: openrouter
+    model: arcee-ai/trinity-large-preview:free
+    prompt_tokens: 18236
+    completion_tokens: 3000
+    cost: 0.0
+    finish_reason: length
+    duration_seconds: 175.1
+    error: null