docs(agent): refactor for discoverability + fix post-split stale paths

docs(sec_edgar): document 8-K parsing + EX-99.x exhibit append

feat(similarity): chart-pattern similarity search via STUMPY MASS

docs: fix mkdocs strict-build warnings (broken links + anchor slugs)

feat(agent): single-source-of-truth registry + 14 new /agent/api/* routes + multi-host installer

feat(agent): land P1 desperate-investor QA fixes and panel UX polish

refactor(agent): make orchestrator-as-tool the persona routing mechanism

docs(agent): document recovery and hidden guru routing

fix(agent): gate widget on hosted model readiness

docs: add structured docs site and agent guides