Documentation improved

Documentation

• README — Tagline: Replaced "A reactive data processing pipeline system for TypeScript" with "A language for describing interactions between components" — describes the essence, not an application.
• README — Graph diagram: Added ASCII graph diagram illustrating transfers as nodes and bridges as edges, with the caption "This is a graph."
• README — Architectural Invariants: Integrated the central philosophical formulation: "Behavior can be described as a composition of independent capabilities that simultaneously determine the type, the implementation, and the rules of interaction."
• README — Audit corrections, verbosity reduction.
• package.json: Description aligned with the new tagline.

Code style

• src/transfers.ts: Transfer class definitions reordered for logical grouping — ChannelTransfer, StoredChannelTransfer, PushStoredChannelTransfer moved adjacent to PushChannelTransfer. No functional changes.
• src/factories.ts: createPushStoredChannelTransfer factory moved adjacent to createPushChannelTransfer. Multi-line function signatures collapsed to single lines, trailing commas added for consistency. No functional changes.

Tests

• No test changes. 100% coverage maintained. Total tests: 1,957.