The .opencode agent definitions and docs/sdd_process.md were copied
verbatim from alkgit; replace the stale project references with
alkssh-shaped ones:
- sdd_process.md: title line named @alkdev/alkgit
- coordinator.md: example spawn prompt named the project and carried
alkgit constraints (pure protocol crate, gix, feature list)
- implementation-specialist.md: conventions 7-9 were alkgit's
(gitoxide/no-MPL, sha256/acme features, repo-public auth wording);
now russh-owns-the-wire, fail-closed mapping features, key reuse
- architect.md: deferral examples named alkgit-admin and the alkhttp
git-feature shape
- poc-specialist.md: standalone-POC path example /workspace/alkgit-poc1
Verification: docs-only change