feat: Phase 4 — plugin manifests, ADRs, docs, Python tree removal

[CodeWithJuber]

Summary

Phase 4 of the Rust rewrite: finalize the project structure with plugin manifests, architecture decision records, regenerated documentation, and removal of the entire Python tree.

• Four plugin manifests at version 2.0.0: .claude-plugin/plugin.json, .claude-plugin/marketplace.json, .codex-plugin/plugin.json, kimi.plugin.json
• Three ADRs: 0002 (Rust rewrite rationale), 0003 (vendoring resolution — reference don't vendor), 0004 (BLAKE3 hash-chained audit ledger format)
• AGENTS.md with pre-completion verification commands and repo conventions
• README rewrite with accurate provider/operation table (21 providers, 278 operations) generated from the catalogue — no false claims
• CI overhaul: Python quality job replaced with Rust (fmt, clippy, test, validate), manifest version parity gate added, gitleaks retained
• Validate extended to check plugin manifest version parity across all four files
• Python tree deleted: hub/, connectors/, verifier/, vendor/, scripts/, tests/, .agents/, mcp/, schemas/, pyproject.toml, uv.lock, ARCHITECTURE.md, plan.md, .env.example, .env.template (96 files, -7774 lines)

Validation

• Formatting and lint checks pass.
• Type checks pass.
• Unit tests pass (26 tests across 5 crates).
• Integration tests were run, or are not applicable.
• Documentation and data-source references are updated.

Security and operations

• No credentials, tokens, customer data, or generated .env files are included.
• New network calls have timeouts, bounded retries, validation, and rate-limit handling.
• Breaking changes, deployment steps, and rollback steps are documented.

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Generated by Claude Code