fix(ci): bump hypatia-scan-reusable SHA pin to reachable commit (unblocks required check) (#98)

Root cause: the pinned SHA \`97df762107501909f50bb770e9bc200b6c415600\`
references the **original PR-branch commit** of
[standards#193](hyperpolymath/standards#193),
not the squash-merged commit on main (\`915139d7\`). The PR-branch
commit is **orphaned** — not reachable from \`origin/main\`:

\`\`\`
$ git merge-base --is-ancestor 97df762... origin/main
$ echo $?
1
\`\`\`

GitHub Actions requires \`workflow_call\` SHAs reachable from the called
repo's default branch. With an unreachable SHA, the workflow fails with
**"This run likely failed because of a workflow file issue"** — no jobs
are created, no logs produced, and the required check \`Hypatia
Neurosymbolic Analysis\` never reports, blocking every PR via
branch-protection's required-checks list.

## Evidence

- Last successful hypatia-scan run on this repo: 2026-05-26 17:42
(commit \`ce329927\`, before SHA-pin merged in #84)
- First failing run: 2026-05-27 12:02:35 (commit \`eb02a080\`, on main
after #84)
- Every subsequent run: failed identically
- All other reusables (secret-scanner, mirror, governance) pin to
reachable SHAs and work fine

## Fix

Bump to \`4f07382468f045cdaf75e0bbdb1886a0579d83e3\` — the latest commit
on standards' main that modified \`hypatia-scan-reusable.yml\`
(2026-05-30 erlef/setup-beam consolidation,
[standards#289](hyperpolymath/standards#289)).
Verified reachable from \`origin/main\` of standards.

## Estate-wide scope

54 repos carry the same broken SHA. Sweep tracked separately.
Distribution:

| SHA | Repo count | Reachable? |
|---|---|---|
| \`97df762\` (broken — PR-branch commit) | 54 | ❌ |
| \`915139d7\` (merge commit) | 19 | ✅ |
| \`5eb28d7d\` (later) | 10 | ✅ |
| \`2569c10e\` (later) | 1 | ✅ |

Refs hyperpolymath/standards#287

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

Author: hyperpolymath

.github/workflows/hypatia-scan.yml

@@ -25,5 +25,5 @@ permissions:
 
 jobs:
   hypatia:
-    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@97df762107501909f50bb770e9bc200b6c415600
+    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@4f07382468f045cdaf75e0bbdb1886a0579d83e3
     secrets: inherit