- add optional members arg support to athena_council tool
- filter selected members case-insensitively with clear unknown-member errors
- add tests for default-all and member selection behavior
Council members launched as agent='athena' got Athena's system prompt saying
'ALWAYS call athena_council first', plus the tool wasn't denied for bg athena
tasks. Each council member spawned 4 more → exponential explosion (47+ tasks).
Three fixes:
1. Deny athena_council in ATHENA_RESTRICTIONS (agent-tool-restrictions.ts)
- Only affects background athena tasks (task-starter.ts)
- Primary Athena (user-selected) still has access via permission field
2. Session-level dedup guard prevents re-calling while council is running
- If Athena retries during long wait, returns 'already running'
3. Increase wait timeout from 2min to 10min (council members need time
for real code analysis with Read/Grep/LSP)
