Add SAID Protocol agent identity integration

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Adds SAID Protocol — on-chain agent identity, verification, and trust on Solana — to the Integration Command Center.

What this adds

• SaidProtocolService (main process): reads agent identity and the 0–100 trust score from the public SAID API (api.saidprotocol.com). Validates wallet addresses, 10s timeout, no key required.
• said:get-identity / said:get-trust IPC + preload bridge + renderer types.
• Integration Command Center tile: read-only Check identity, Browse directory, Open docs, and a confirmation-gated Preview registration.
• Aligned with the official SAID docs (saidprotocol.com/docs): identity, verification badge, soulbound Token-2022 passport, reputation, A2A messaging, resolution.

Scope / safety

• Ships read-only. No register/verify signing path is wired yet — preview-said-register is planned + requires-confirmation.
• Program IDs are docs-sourced and must be verified on-chain before any signing flow.
• Mirrors existing tiles (SendAI, IDLE, SpawnAgents).

Tests

• test/services/SaidProtocolService.test.ts — 9 cases (validation, score unwrap, 404, clamp, 5xx).
• test/panels/IntegrationCommandCenter.registry.test.ts — 5 SAID cases (tile shape, success/unregistered/error/no-wallet).
• Verified live against the real SAID API (identity + trust read back correctly).
• typecheck clean; integration panel DOM + sendai suites green.

Docs published to daemonide.tech in daemon-landing (docs: add SAID Protocol integration page).