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.
- ADR-006 (Accepted): direct-tcpip rides the adapter-side bridge
(alktunnels route 1; registry-side bridging rejected as door-posture
inversion; absence note resolved); git over SSH is exec-only with
subsystem declining (vanilla git's connection model is exec of
git-{upload,receive}-pack — POC-3 grammar table); session dispatch:
request-driven parse wins, request-less channels get the bounded
SOCKS-detect (first-byte 0x05, 500 ms default, assembly-configurable);
spawn-and-return recorded as a structural constraint
- OQ-02 resolved by ADR-006; README doc/ADr tables + OQ summary updated
- enabling the rsa feature is reverted: no other family location uses
RSA, ed25519 is the suggested path everywhere; the tree drops
rsa 0.10.0-rc.18 + pkcs1 0.8.0-rc.4 entirely (verified: aws-lc-rs-only
scratch build clean and RC-free except ssh-key =0.7.0-rc.11, which
russh exact-pins itself on the russh::keys path)
- RSA user keys decline fail-closed (russh fails RSA signing explicitly
when the feature is absent — 0.63.2 fix); assembly registration policy
(alkforge: register ed25519) noted as assembler territory
- README ADR table title updated
- ADR-002 (Accepted): pin russh 0.65 (0.65.0 published 2026-10-25
after the POCs' 0.64.1 verification — six security fixes incl.
three in internet-facing classes; breaks are handler-signature
shapes only, wire evidence transfers); aws-lc-rs backend confirmed
with a clean in-scratch build record (no provisioning; ring kept as
the recorded fallback); flate2 off (no compression); rsa on (front-
door compat — supersedes the research docs' earlier off-leaning;
RC-tree posture accepted with a recorded stable-release trigger);
des/dsa never; rust-version 1.89 lands with the dep
- russh.md: re-verification-at-architecture-time section added
(0.65.0 delta: PublicKeyOffer/VerifiedPublicKey, async-trait
removed, GHSA list, verified build + tree facts)
- ADR-003 (Accepted): five features (session/git/tunnel/
dynamic-forward/sftp-placeholder), flat + independent, default [],
two-direction symmetry rule (one name, both doors), client acceptor
fail-closed (not russh's accept-and-drop), x11/auth-agent never
features, honest advertisement per build