manbot system prompt

# FP-12: Update Planner Prompt for File Context Awareness **File**: `src/agents/prompts/planner.ts` **Dependencies**: FP-10 **Phase**: 5 — Planner Integration ## Description Update the planner system prompt and `buildPlannerPrompt()` so the planner correctly handles enriched goals that contain inline file context blocks or RAG-indexed file references. The planner must understand when to use semantic search for indexed files and when to use inline context directly. ## Acceptance Criteria - Add a `<file_context_instructions>` section to `PLANNER_SYSTEM_PROMPT`: - If the user goal contains a `--- file: name ---` block: the content is directly available; use it as input to generation nodes - If the goal mentions `"has been indexed"` or `"Use semantic search"`: the planner MUST include a `semantic_search` node before the generation node - Audio transcripts that form the goal should be treated like any other user goal - Add a few-shot example for a document query: ``` User: [sends document.txt] "Summarize this" Goal: "Summarize this\n\n--- file: document.txt ---\n{content}\n---" → Single generate_text node using inline context ``` - Add a few-shot example for a large indexed file: ``` Goal: "File 'report.pdf' has been indexed. Use semantic search. Summarize the key findings." → semantic_search node → generate_text node ``` ## Implementation Notes - Keep the additions concise — the prompt is already long - Do NOT change the output JSON schema or any other existing planner rules - The `buildPlannerPrompt()` function signature does NOT change — enriched goal is passed as `userMessage`