chore: establish phase 0 baseline

docs/phase-0/status.md

@@ -0,0 +1,43 @@
+# Phase 0 status — complete
+
+## Verified in Work Mode
+
+- Active numbered specification imported; archive intentionally excluded.
+- Workspace manifests and pinned-toolchain configuration parse successfully.
+- All 29 requirement IDs are unique and represented in the traceability matrix.
+- Decision IDs are unique; active spec version marker is `0.16`.
+- Temporary naming is documented and structurally constrained.
+- Python verifier compiles and the repository has no whitespace errors.
+
+## Local execution result — passed
+
+The initial desktop execution exposed and corrected formatting and toolchain-enforcement
+defects. The final execution passed under Arch Linux Rust 1.97.1:
+
+- static repository/specification verification;
+- exact-toolchain verification;
+- Rustfmt;
+- workspace and all-target compilation;
+- all three core unit tests;
+- Clippy for the workspace and all targets with warnings denied;
+- human and JSON `kiln doctor` smoke paths (verified in the preceding run).
+
+Reproduce the gate with:
+
+```sh
+make verify
+cargo run --locked -p kiln-cli -- doctor
+cargo run --locked -p kiln-cli -- doctor --json | jq -e \
+  '.schema_version == 1 and .status == "ok" and .private_placeholder == true'
+```
+
+The exact-toolchain gate, canonical AGPL license, dependency-free static audits, and
+cargo-deny 0.20.2 advisory/bans/licenses/sources audit all pass. Phase 0 is closed.
+A first hosted CI run remains required before accepting external changes or claiming
+enforced CI, but does not block private Phase 1 contract design.
+
+`rust-version = "1.85"` records the minimum supported compiler for Edition 2024. The
+exact reviewed development and CI toolchain remains pinned separately to Rust 1.97.1 in
+`rust-toolchain.toml`; these controls must not be conflated. `make verify` explicitly
+checks the active `rustc` version because distro-provided Rust binaries may ignore the
+Rustup override file.