Initial commit: prospecting agent loop MVP

Closed-loop account-intelligence system: harvest -> relevance filter vs.
Capability Library -> synthesize -> score -> deliver -> feedback.

- 40-capability Broadcom + VMware library
- Live Exa.ai news connector with hard free-plan request ceilings
- Provider-agnostic LLM layer (Gemini/Anthropic) with offline mock fallback
- LLM confidence wired into composite scoring + low-confidence floor
- 7-account pilot list

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,15 @@
+# Secrets — never commit
+**/.env
+.env
+
+# Generated artifacts / local state
+**/output/
+sales-agent/output/
+
+# Python
+**/__pycache__/
+*.pyc
+*.pyo
+
+# OS
+.DS_Store