fix(baseline): unblock 2 baseline-rot checks blocking dependabot #69

Two CI checks have been failing on `main` for at least several days
(verified via `gh api .../commits/main/check-runs`), poisoning every
inbound PR including the dependabot SHA bump in #69:

## Validate K9 contracts

`absolute-zero/coordination.k9` was a markdown-format coordination
protocol document misnamed with the `.k9` extension. The K9 validator
expects K9-contract format (must start with `K9!` magic, must contain a
`pedigree = { ... }` section), so it failed:

    ##[error]Missing K9! magic number. First non-empty line must be exactly 'K9!'
    ##[error]Missing pedigree block. K9 files must contain a 'pedigree = { ... }' section

Renamed `absolute-zero/coordination.k9` → `absolute-zero/COORDINATION.md`.
Content is unchanged; only the extension changed. The K9 validator now
finds zero `.k9` files in the repo and skips cleanly.

## Language / package anti-pattern policy

5 banned-language files surfaced as violations:
- absolute-zero/src/AuditTrail.res
- absolute-zero/interpreters/rescript/malbolgeInterpreter.res
- absolute-zero/examples/SafeDOMExample.res
- aletheia/examples/SafeDOMExample.res
- absolute-zero/examples/go/nop.go

These are vendored under `absolute-zero/` and `aletheia/` subdirs of
this monorepo — they do NOT appear in the standalone upstream repos
(verified via local file-existence check against
`/home/hyperpolymath/developer/repos/absolute-zero/`). They predate
the estate-wide ReScript→AffineScript migration and are demonstration
scaffolds rather than load-bearing code.

Added `.hypatia-ignore` listing each as an explicit exemption using
the format the governance check honours
(`cicd_rules/banned_language_file:<relpath>`, exact line match per
`grep -qxF` in `hyperpolymath/standards`
`.github/workflows/governance-reusable.yml`).

The exemption file carries a `TODO 2026-Q3: migrate these to
AffineScript and drop the exemptions` comment to keep the migration
work visible.

## Why this PR

Foundational unblock of #69 (build(deps): bump dtolnay/rust-toolchain
SHA) which inherits the broken baseline. After merge, every inbound
PR should report a clean governance status, not just #69.

Author: hyperpolymath

.hypatia-ignore

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: MPL-2.0
+#
+# Estate-policy exemptions for legacy demonstration files vendored under
+# absolute-zero/ and aletheia/ subdirs. These pre-date the estate-wide
+# ReScript→AffineScript migration; they live in this monorepo only (not
+# in the standalone upstream repos) and are demonstration scaffolds, not
+# load-bearing code paths.
+#
+# TODO 2026-Q3: migrate these to AffineScript and drop the exemptions.
+
+cicd_rules/banned_language_file:absolute-zero/src/AuditTrail.res
+cicd_rules/banned_language_file:absolute-zero/interpreters/rescript/malbolgeInterpreter.res
+cicd_rules/banned_language_file:absolute-zero/examples/SafeDOMExample.res
+cicd_rules/banned_language_file:aletheia/examples/SafeDOMExample.res
+
+# Go-language demonstration of "nop" semantics in the absolute-zero
+# subdirectory. Mirrors the file in the standalone absolute-zero repo's
+# own .hypatia-ignore.
+cicd_rules/banned_language_file:absolute-zero/examples/go/nop.go