Renames the written-usage rule into practice across the contract surface:
docs/ (architecture, research, plans, sdd), tasks/ (all 43 task files,
taskgraph validate passes), AGENTS.md, README.md, CHANGELOG.md, and the
.opencode/agents/ prompts. Every replacement is a sense-preserving
rewrite (colons, semicolons, commas, parentheses, sentence splits, varied),
never a mechanical swap; no spaced hyphens were substituted. Enum fields,
frontmatter, tables, wire data, and cited identifiers survive verbatim;
en dashes inside numeric ranges keep their meaning.
Verification: taskgraph validate (43 tasks), repo grep clean (single
exempt hit: the verification command's own search pattern in AGENTS.md),
cargo test, clippy --all-targets -D warnings, fmt --check, doc all green.
- auth_publickey: ed25519-only gate → single fingerprint path →
resolve_from_fingerprint → accept-with-identity (stored per-
connection, read by wave 3) / reject fail-closed; the gate is
explicit-over-inherited (ADR-002 decision 4) and precedes resolution
- auth_publickey_offered: explicit accept-and-delegate (counting
stays honest, POC-1)
- auth_none / auth_password / auth_keyboard_interactive /
auth_openssh_certificate: four explicit family-contract declines
- username carried by no hook — resolution is fingerprint-only (OQ-03)
- SessionHandler constructible via #[doc(hidden)] re-export (the
w2-server-mount note's widening); resolve_bridge structured out of
the #[non_exhaustive]-arg hooks so contract tests drive the bridge
core directly
- tests/auth_bridge.rs: 21 rows — wire rows over the real adapter
mount (accept, fail-closed reject, username independence, revoke
between attempts, none/password/certificate declines) + direct
rows over the wave-1 doubles
- cert fixture (throwaway ca + alpha-cert.pub) recorded in
fingerprints.txt; MemHostKeySource double in tests/common
Verification: cargo test (76 across the suite), --all-features,
clippy --all-targets (both feature sets, -D warnings), fmt --check,
doc --no-deps, taskgraph validate — all green
Six implementation tasks + the gate under tasks/implementation/,
chained sequentially (the auth hooks, dispatch, and channel cap all
edit the same per-connection Handler impl):
- w2-server-mount: SshAdapter::handle mount + russh Config
construction from the serve-config (honest advertisement, host-key
decrypt-at-construction, the Limits knob mapping) + the Handler
skeleton at fail-closed defaults
- w2-auth-bridge: the ADR-004 dispositions (ed25519-only explicit
decline, fingerprint-only resolution, explicit declines for every
non-publickey method)
- w2-loopback-harness: the in-process client/server contract-test
vehicle over the wave-1 doubles
- w2-dispatch-decline-core: parse-only dispatch + the fail-closed
decline core, contract-tested per feature build
- w2-spawn-return: the structural constraint pinned by test + the
exit-reporting mechanics via the cloned Session::handle()
- w2-bounded-resources: the in-crate concurrent-channel cap at the
handler surface
- review-wave-2: the gate
The plan carries the wave-2 decomposition record with four
interpretations flagged for the gate (skeleton-level git probe,
declining routing stubs, the adapter error surface, the harness
transport choice). taskgraph validate: 19 tasks, clean.