docs: add public Project Manager agent overview and index links

[Virge44]

Project Manager Agent (Public Overview)

Purpose

The Project Manager agent supports execution coaching over X DMs by helping operators select a focus lane, define clear next actions, and maintain momentum with concise follow-up guidance.

Public Capabilities

• Structured intake flow for execution planning
• Clarifying-question handling for ambiguous user requests
• Adaptive coaching tone (direct steps vs guided learning)
• Workflow support for distribution/raids and repository execution tracks
• Operational resilience through polling-based message handling and rate-limit backoff

Deployment Model (Public)

• Hosted as a managed service
• Integrates with X DM APIs for message intake and response
• Uses polling fallback with backoff under API rate limits

Configuration Surface (Public)

The service is configured via environment variables for:

• API credentials
• Polling cadence and limits
• Session behavior and response controls

Exact internal prompt policies, scoring logic, and decision thresholds are intentionally not published.

Reliability Notes

• Handles API 429 responses using reset-aware backoff
• Recovers automatically after rate-limit windows reset
• Supports configurable polling parameters for stability/performance tradeoffs

Security and Privacy Notes

• No credentials or tokens are stored in repository docs
• Proprietary policy logic remains in private runtime configuration
• Public docs describe behavior and operations, not private internals

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[7etsuo]

Thanks for this. The branch has drifted and now conflicts with main after the recent umbrella/docs reconciles. Could you rebase onto current main? Happy to merge once it's clean.