docs(wiki): align with v7.19.x and the README overhaul
- Fix broken README links across Home/_Sidebar/_Footer/Environment-Setup-Scripts (wrong org: special-place-administrator -> special-place-ai-heaven).
- 31 -> 32 MCP tools (Home, Tool-Reference); add checkpoint_now to the Indexing table with its daemon-proxy and degraded-fallback receipt semantics.
- Tool-Reference: document the ask tool catalog, the symforge://tools/catalog resource, tee snapshots, idempotency replay, and worktree routing details (rebased edit base, index purity, batch fail-closed divergence guard).
- Architecture: new Trust Envelopes and Expected-Partial Parse Quarantine sections (the README Innovations links target these).
- Runtime-Model: new Worktree-Aware Editing section; local stores add quarantine/, idempotency/, tee/; env table adds SYMFORGE_DAEMON_ALLOW_NON_LOOPBACK, SYMFORGE_DAEMON_AUTH_TOKEN, SYMFORGE_CHECKPOINT_INTERVAL_SECS, SYMFORGE_EXCLUDE_UNTRACKED; snapshot section documents checkpoint_now + quarantine.
- Home: snapshot mentions trust envelopes.
docs: refresh SymForge wiki reference
docs: structure wiki reference pages