IA-2: tacit_knowledge_curator returns empty results because ChromaDB corpus is not indexed

[adris-misra]

Description

The tacit_knowledge_curator agent, when invoked from IABENCH-v1 task
IA-2, returns zero retrieved documents for every query. nDCG@5 is 0.0 not
because retrieval is wrong but because the ChromaDB instance has no
documents indexed at runtime — the agent has nothing to retrieve from.

Surfaced by the PR 2 health-check run.

Steps to reproduce

1. Check out main with PR 2 merged
2. $env:PYTHONPATH = "."
3. industrial-agents bench --suite all --provider ollama --model llama3.1:8b
4. Inspect IA-2's per-query details — retrieved_docs: [] for all queries

Expected behaviour

On framework startup or first agent invocation, the tacit_knowledge_curator
should index the synthetic SOPs (data/synthetic/sops/) and expert notes
(data/synthetic/expert_notes/) into its configured vector store, so that
queries return ranked results.

Actual behaviour

ChromaDB is empty. The agent runs without errors but every retrieval
returns []. IA-2 mean nDCG@5 = 0.0 across all queries.

Framework version

v0.1.0-pre (bench/iabench-retrieval-hallucination @ 2d2834f)

LLM provider

ollama

Environment

Windows 11, Python 3.12