docs: add persona-based SDK wiki (11 pages + sidebar/footer) - Home: persona hub, 60-second quickstart, architecture blurb - Getting-Started: install, API key, first calls (Python + TS), hosted vs self-hosted - Architecture: HTTP/gRPC/local paths, generated contract + discovery, device binding, license model, open/closed boundary - Governance-Profiles-and-Receipts: observe/govern/execute/full, receipts, approvals, end-to-end example - Mojo-Quickstart: pixi run demo walkthrough, wire protocol, env overrides, signed-runtime story - Examples: catalog of all 13 example dirs + shared helper - Error-Handling: exception taxonomy, retries/timeouts/request-ids - Versioning-and-Releases: SemVer, D0 signed-authorization gate, Sigstore/SLSA verification - Security: reporting policy + supply-chain verification - Contributing: dev/test commands, workflow, wiki etiquette - FAQ: naming, aliases, env vars, Windows, offline, licenses