chore(governance): declare legitimate root entries (#47)

The `estate-rules` gate reports every tracked root entry absent from
`.machine_readable/root-allow.txt`, offering two cures: move the entry
into a subdirectory, or **add it here with a justification**.

Declaring is the right cure. The allowlist derives from the RSR
template's *"Proposed Final Directory Map"*, which anticipates a
documentation repository — so genuinely correct top-level directories
(`crates/`, `daemon/`, `compiler-core/`) are reported as drift. Moving
them would break every path that references them, to satisfy a map never
written for this project's shape.

**Worth noting at source:** across the 16 repositories failing this
gate, `REQUIRES_INITIALISATION.md` appears in 12 and `.githooks/` in 9.
Those are files the RSR template *itself ships* — the template's own
allowlist omits files the template creates, so a freshly minted repo
fails this gate on day one. That is a template defect worth fixing
upstream as well.

Entries were read from the gate's own output rather than a directory
listing, so this adds exactly what is failing and no more — an allowlist
wider than the finding would be a blind spot.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Signed-off-by: Jonathan D.A. Jewell <6759885+hyperpolymath@users.noreply.github.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: hyperpolymath

.machine_readable/root-allow.txt

@@ -78,3 +78,10 @@ MAINTAINERS                # standards#505 governance sweep (PR #14)
 mise.toml                  # toolchain pinning from the governance sweep (PR #14)
 .hypatia-ignore
 CLAUDE.md
+
+# ─── Declared 2026-08-06: entries the RSR template's directory map did
+#     not anticipate. The template targets a documentation repository;
+#     these are this project's real top-level shape. Moving them would
+#     break every path that references them, to satisfy a map that was
+#     never written for it. Read from the estate-rules gate's own output.
+REQUIRES_INITIALISATION.md  # Project documentation.