scaffold: AGENTS.md, Cargo.toml, licenses, agent conventions adapted for alktunnels
- AGENTS.md adapted from alkcall (via alktty's pattern) for the tunnel
protocol crate: substrate-agnostic conventions, two-pump contract,
no-forced-binding requirement, alkcall 0.4.0 dependency, wasm-clean
default crate, ALPN naming
- .opencode/agents/implementation-specialist.md conventions section
adapted from alkcall's call-protocol rules to tunnel-crate rules
(mirroring alktty's adaptation)
- docs/sdd_process.md package reference fixed to alktunnels
- Cargo.toml scaffold: wasm-clean tokio subset, alkcall 0.4.0
- LICENSE-MIT / LICENSE-APACHE copied from alktty
- src/lib.rs protocol-only stub; docs/architecture/ lands in Phase 1
Verification: cargo test (0 tests, ok), cargo clippy --all-targets
-- -D warnings, cargo fmt --check, cargo clippy
--target wasm32-unknown-unknown -- -D warnings — all clean