Repo already cloned. Inspecting its state:Spec seed confirmed. Checking for the referenced DESIGN.md locally:Checking harness repo conventions (dev.sh, Makefile, docker digest pinning) to match the tool family:Checking harness events receiver for server/logging style conventions:I have full context. Checking docs/report standards and the credential source file shapes (key names only, never values):All sources already 0600. Checking env-file syntax quirks (structure only, no values):Conventions fully mapped. Checking the harness smoke pattern, then writing the implementation:Committing the seed first, then writing the implementation:Now the backend interface package:Now the env-file parser and the file backend:Now env backend and the bitwarden/vault stubs:Now the config package — minimal TOML parser plus config load/validate:Now the server package with auth, redaction, and panic-safe resolve handler:Now main.go, dev.sh, Makefile, and keyproxy.toml.example:Now the tests — backend first:Now config tests:Adding strict unknown-key validation to Load, then config tests:Now the server tests:Now the smoke harness (shell + python probe):Three test issues + one real gap exposed (startup crash path needs recover hardening too). Fixing:Now fix the panic test to serve the auth token, then panic on data refs; add a startup-panic subtest:All green. Running the end-to-end docker smoke:Smoke found a real config issue: in-container bind must be `:8082` for docker `-p` publishing (host map is the boundary). Also making the probe transport-robust:10/10 PASS, log fully redacted. Seeding real config + token (token never displayed):Live over HTTP: 401/200/400 all correct, values never printed. Checking the `get` CLI and final log redaction:Live, redacted, `get` works. Making the tracked example config org-neutral (loose-coupling rule), then writing the README:Verifying the README quickstart verbatim (scratch HOME, exact commands):Old instance still holds 8082. Killing it properly and re-verifying:Server processes stopped. Re-running the verbatim README verification:README quickstart verified verbatim. Verifying the `get` one-liner, then restoring the live service: