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feat(trust): host-gated trust-on-first-use — PIN pairing mandatory by default
TOFU let anyone who could reach the host click "Trust" and stream, which defeats the point
on a LAN. Make SPAKE2 PIN pairing the default and only way to trust a NEW host; TOFU survives
as an explicit HOST opt-in (for fully trusted networks), advertised over mDNS so clients render
their trust UI from the host's policy rather than offering trust on faith.

Contract:
- Host advertises pair=required (default) or pair=optional. pair=required rejects unpaired
  clients at the handshake; pair=optional accepts them (TOFU).
- Clients: a pinned host whose fingerprint matches connects silently; a pinned host whose
  fingerprint CHANGED forces re-pairing via PIN (no re-trust shortcut); a NEW host is offered
  TOFU only if it advertised pair=optional, otherwise PIN pairing is mandatory; a manually-typed
  or unknown-policy host is always PIN.

Host (crates/punktfunk-host/src/main.rs):
- m3-host now REQUIRES pairing by default (was open by default). New --allow-tofu opts into
  accepting unpaired clients + advertising pair=optional; pairing is always armed (PIN logged at
  startup). serve --native was already secure-by-default (serve --open). The mDNS advert and the
  accept loop already mapped require_pairing -> pair=required + reject; only the m3-host CLI
  default + help text changed.

Clients honor the advertised policy:
- Android (MainActivity.kt): TOFU only for a discovered pair=optional host; manual/unknown -> PIN;
  fp-change -> re-pair only (dropped the "Forget & re-TOFU" shortcut).
- Apple (HostDiscovery/SessionModel/ContentView/HostCards/HostStore): new allowsTofu
  (pair==optional, distinct from unknown); connect() gates .awaitingTrust on it; unpinned
  non-optional hosts route to the PIN sheet; "Forget Identity" re-pairs rather than re-TOFUs.
- Linux (app.rs/ui_hosts.rs/session.rs): ConnectRequest.pair_required -> pair_optional;
  initiate_connect routes pinned/fp-changed/optional/else; manual + --connect unknown -> PIN; a
  pinned connect rejected on trust grounds re-pairs.

Docs (CLAUDE.md, README.md, docs-site/content/docs/pairing.md): describe the gated model — PIN is
the default, TOFU an explicit opt-in with an impostor warning.

Verified: host cargo check/clippy/fmt clean; Android built + live (emulator -> home-worker-2):
a manual connect now opens the PIN dialog (no Trust button) and the PIN ceremony streams; Apple
swift build clean; Linux clippy -D warnings + fmt clean on the Linux box.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-15 13:27:52 +02:00
..

punktfunk-docs

The punktfunk documentation site: Fumadocs on TanStack Start (Vite + Nitro/bun preset).

Content lives in content/docs/ as .md/.mdx. Several pages are imported verbatim from the repo's docs/ design notes (with added frontmatter); edit those there or here as the docs site becomes the source of truth.

Develop

bun install
bun run dev        # http://localhost:3001  (docs at /docs)

Build & serve

bun run build
bun run start      # serves .output/ via Bun

Layout

source.config.ts          Fumadocs MDX collection (content/docs)
content/docs/             the docs content (.md/.mdx) + meta.json nav
src/
  routes/
    __root.tsx            RootProvider + html shell
    index.tsx            landing page
    docs/$.tsx           catch-all docs renderer (Fumadocs DocsLayout)
    api/search.ts        Orama search endpoint
  lib/source.ts          Fumadocs loader over the generated collection
  lib/layout.shared.tsx  shared nav chrome
  components/mdx.tsx      MDX component map
  styles/app.css          Tailwind 4 + Fumadocs preset