docs: audit corrections, coverage pages, screenshots, and em-dash removal

Finalizes the docs section after an adversarial audit (code review + per-page
fact-check + coherence critic) and two content requests.

- Accuracy: fixed 10 invented cross-link slugs, the admin-vs-board gating claims
  the verifiers caught (permissions matrix, /settings, invites, onboarding,
  connect-payments, proposal withdraw, Stripe reconciliation, member fields,
  door.operate), and 2 issues in the new pages (project area-at-creation, forum
  thread-delete role).
- Coverage: added 5 how-to pages so every module is documented (recurring Stripe
  dues, tasks & chores, projects, comms & forum, ops knowledge base + secrets
  vault). 34 pages total.
- Screenshots: 12 captioned app screenshots under public/docs-media/, embedded
  as figures. Each tutorial now has 2-3 step screenshots.
- Style: removed all em-dashes/en-dashes/ellipses from the docs (natural ASCII
  punctuation).
- Handoff (docs/HANDOFF-audit-cleanup.md) updated with the current state.

typecheck 0 · lint 0 errors · build ok (all 34 /docs pages prerendered)

lib/docs/nav.ts

@@ -48,9 +48,14 @@ export const DOC_CATEGORIES: DocCategory[] = [
       { slug: 'invite-links', title: 'Create role-granting invite links', summary: 'Generate invite codes with usage caps, expiry, and a granted role.' },
       { slug: 'configure-onboarding', title: 'Configure the onboarding flow', summary: 'Add, reorder, require, and disable onboarding steps.' },
       { slug: 'connect-payments', title: 'Connect payments & reconcile dues', summary: 'Add a platform, import transactions, and match them to members.' },
+      { slug: 'stripe-dues', title: 'Set up recurring Stripe dues', summary: 'Let members subscribe so dues reconcile themselves each cycle.' },
       { slug: 'build-a-form', title: 'Build a form or signable waiver', summary: 'Compose fields, set visibility, and capture immutable submissions.' },
       { slug: 'equipment-reservations', title: 'Set up equipment & reservations', summary: 'Register tools, take reservations, and gate a tool behind a certification.' },
       { slug: 'connect-a-door', title: 'Connect a door controller', summary: 'Wire a native or generic controller, assign cards, and read the access log.' },
+      { slug: 'create-tasks-chores', title: 'Create tasks & recurring chores', summary: 'Add one-off and recurring work with assignments, due dates, and areas.' },
+      { slug: 'track-projects', title: 'Track projects', summary: 'Run a shared board of what the space is building.' },
+      { slug: 'use-comms-and-forum', title: 'Use comms & the forum', summary: 'Post to channels and threads for space-wide discussion.' },
+      { slug: 'manage-ops-knowledge', title: 'Write ops docs & store secrets', summary: 'Author knowledge base entries and keep credentials in the encrypted vault.' },
       { slug: 'run-a-proposal', title: 'Run a proposal to a vote', summary: 'Open a proposal, set quorum and threshold, and record the outcome.' },
       { slug: 'handle-incidents', title: 'File & manage an incident', summary: 'Report an incident (anonymously if needed) and move it to a decision.' },
       { slug: 'publish-a-policy', title: 'Publish & version a policy', summary: 'Write a policy, publish it, and supersede it with a new version.' },