feat: Full code review, bug fixes, and philosophy book generation

This commit includes:
- A full code review and bug fixes for language drift, package loading, and CLI crashes.
- The generated 15,000-word philosophy manuscript.
- CODE_REVIEW.md and CHANGELOG.md documenting the process.

opus_orchestrator/orchestrator.py

@@ -321,12 +321,12 @@ Generate a detailed outline with:
         content: Optional[RawContent] = None,
         sources: Optional[list[dict]] = None,
     ) -> OpusState:
-        """Ingest raw content from multiple sources.
-        
-        Args:
-            content: Pre-loaded raw content
-            sources: List of source configurations (github, local, s3)
-        """
+        """Ingest raw content from multiple sources."""
+        # Skip if we already have content and weren't given specific new sources/content
+        if self.state and self.state.raw_content and not content and not sources:
+            print("ℹ️  Using existing raw content.")
+            return self.state
+
         if sources:
             from opus_orchestrator.utils.multi_source_ingest import ingest_multiple
             
@@ -335,7 +335,6 @@ Generate a detailed outline with:
             result = await ingest_multiple(
                 sources=sources,
                 github_token=self.config.github_token,
-                # AWS keys would come from environment
             )
             
             content = RawContent(
@@ -399,29 +398,26 @@ Generate a detailed outline with:
     # =========================================================================
 
     async def snowflake_stage_1(self) -> str:
-        """Stage 1: One sentence summary.
-        
-        Take your one-paragraph story summary and cut it down to one sentence.
-        """
+        """Stage 1: One sentence summary."""
         print("❄️ SNOWFLAKE STAGE 1: One sentence summary...")
         
         raw_content = self.state.raw_content.text if self.state.raw_content else ""
         
-        user_prompt = f"""Create a ONE SENTENCE summary of this story concept.
+        user_prompt = f"""You are analyzing a collection of source materials to synthesize a new story.
+        
+## SOURCE CONTENT:
+{raw_content}
 
-The sentence should contain:
-- Protagonist's name (or descriptor)
+## TASK:
+Synthesize the core narrative conflict and outcome from the source content into ONE compelling sentence.
+
+The sentence must contain:
+- Protagonist's name or descriptor
 - Their goal
-- The conflict/obstacle
+- The central conflict/obstacle
 - The stakes
 
 Example: "In a world where magic is forbidden, a young mage must master forbidden arts to save her dying brother, even if it means sparking a war with the ruling theocracy."
-
-## Your seed content:
-{raw_content}
-
-## Task:
-Write ONE compelling sentence that captures the entire story.
 """
         response = await self.agents["architect"].call_llm(
             system_prompt="You are an expert story architect. Create concise, compelling summaries.",