chore(hypatia): exempt examples/SafeDOMExample.res from banned-language scanner (#68)

## Summary

Adds `.hypatia-ignore` carve-out for the existing ReScript example.
Unblocks dependabot #67 (and any other unrelated PR) which currently
fails on `governance / Language / package anti-pattern policy` due to
this single pre-existing file.

## Why

`examples/SafeDOMExample.res` is in scope for the ReScript→AffineScript
migration tracked in affinescript#57. Until that conversion lands, the
right move is explicit exemption so it doesn't block dependabot or other
unrelated work.

## Effect on #67

Once this merges, the `governance / Language / package anti-pattern
policy` job will pass on #67's next CI run.

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

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.hypatia-ignore

@@ -0,0 +1,9 @@
+# Hypatia governance bundle exemptions
+# Format: <rule>:<path> — whole-line fixed-string match (grep -qxF)
+# Detail: hyperpolymath/standards/.github/workflows/governance-reusable.yml `is_exempt()`
+#
+# examples/SafeDOMExample.res — pre-existing ReScript example, scheduled for
+# ReScript→AffineScript migration tracked in affinescript#57. Until the
+# migration assistant converts it in-place, flagging it as a banned-language
+# file blocks unrelated PRs (e.g. dependabot bumps like #67).
+cicd_rules/banned_language_file:examples/SafeDOMExample.res