feat: v0.6 autonomous organization behavior and calibration

[Kristariss]

What changed

• add role-specific organization action sets and formal, informal, and hybrid process modes
• add multi-quarter plan trees, open-action permission checks, endogenous opportunity windows, and organizational learning
• add auditable Web timelines for plans, actions, rule gates, and reflections
• add source-backed Hefei-NIO organizational calibration with held-out validation and multi-seed reports
• bump the project and Web version to 0.6.0

Why

This release moves the simulation from a mostly fixed process toward organizations that autonomously decide when and how to act, while fiscal, legal, contractual, and production constraints remain deterministic and auditable.

Validation

• 81 backend tests passed
• Ruff passed
• Web TypeScript check passed
• production build passed with Node 24
• git diff check passed
• secret scan found no committed API key; .env and .insidegov remain ignored

Review notes

The calibration report selects hybrid mode, with a composite score of 96.6 and held-out validation score of 91.43. These are model-quality diagnostics rather than claims of real-world causal effect.