fix(registry): repair two critical Pkg-resolution breakers (repo URL; name/UUID) (#40)

<!-- SPDX-License-Identifier: CC-BY-SA-4.0 -->
## Summary

Repairs the two **critical** breakers that stop this registry from
resolving under `Pkg`. Part of the Axiom.jl flagship /
registry-infrastructure hardening effort.

## Changes

- **`Registry.toml`** (G20): `repo` pointed at a stale
`HyperpolymathRegistry.git`; set to the real remote
`https://github.com/hyperpolymath/julia-professional-registry.git`.
`name = "JuliaProfessionalRegistry"` is kept per owner decision — a
registry's `name` and its repo slug are independent, so no GitHub rename
is required.
- **`H/Hyperpolymath/Deps.toml`** + **`Compat.toml`** (G21): the
dependency with UUID `c1c96f90-…` was named `JuliaKids`, but
`Registry.toml` binds that UUID to `JuliaForChildren` — the mismatch
breaks `Pkg.add Hyperpolymath`. Renamed to `JuliaForChildren`.

## RSR Quality Checklist

### Required
- [x] No banned language patterns (TOML index edits only)
- [x] SPDX headers — no new/modified *source* files (three registry
TOMLs; no licence/header changes)
- [x] No secrets, credentials, or `.env` files included
- [ ] CI is green — pending (draft; will run
governance/hypatia/codeql/scorecard/secret-scanner)

### As Applicable — Registry Changes
- [ ] `Registry.toml` index updated for a package/version — N/A (URL
repair, no package added)
- [x] Per-package
`Package.toml`/`Versions.toml`/`Deps.toml`/`Compat.toml` consistent —
the JuliaKids↔JuliaForChildren inconsistency is fixed; an independent
name↔UUID cross-check across **37 packages / 191 Deps entries** now
passes (this was the only mismatch)
- [ ] Upstream package meets GOVERNANCE quality bar — N/A
- [ ] Upstream tag matches registered version — N/A

### As Applicable — Documentation / Infra Changes
- [ ] STATE/ECOSYSTEM/META/TOPOLOGY/CHANGELOG/Wiki — not in this
surgical fix; the broader stale-name sweep (~21 files still say
`HyperpolymathRegistry`) and STATE reconciliation are **tracked
residuals**, not addressed here.

## Testing

- `julia -e 'using TOML; TOML.parsefile("Registry.toml")'` and
per-package TOMLs parse cleanly (37 packages).
- Independent name↔UUID cross-check script over all 37 packages / 191
Deps / 176 Compat entries → **PASS** (JuliaKids mismatch gone; no others
found).
- `Registry.toml["repo"]` slug matches `git remote get-url origin`.
- `Pkg.Registry.add(url="file:///…")` + `Pkg.add` round-trip:
**CI-only.** It fails in *this sandbox* with `libgit2 1.6.4` on the
repo's GPG-signed commit history (`GitError ENOTFOUND`), while system
`git clone` of the same repo succeeds and `git fsck` is clean — an
environment limitation, not a repo defect. The intended real check is a
`https://` add in CI.

## Residuals (tracked, not in this PR)
- Broader `HyperpolymathRegistry` → canonical-name sweep across ~21
files (perfective).
- `J/JuliaForChildren/Package.toml` `repo` still `…/JuliaKids.jl.git` (a
repo slug, independent of the registry name — owner to decide whether to
update prospectively).
- RegistryCI/AutoMerge/TagBot wiring (G23) — separate PR.

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

https://claude.ai/code/session_01UPFC9YQ7g9gc3VnRox42Q1

---
_Generated by [Claude
Code](https://claude.ai/code/session_01UPFC9YQ7g9gc3VnRox42Q1)_

Co-authored-by: Claude <noreply@anthropic.com>

Author: hyperpolymath

H/Hyperpolymath/Compat.toml

@@ -12,7 +12,7 @@ FirmwareAudit = "0.1"
 HackenbushGames = "1"
 HardwareResilience = "0.1"
 InvestigativeJournalist = "0.1"
-JuliaKids = "0.1"
+JuliaForChildren = "0.1"
 KnotTheory = "1"
 LowLevel = "0.1"
 MacroPower = "0.1"

H/Hyperpolymath/Deps.toml

@@ -12,7 +12,7 @@ FirmwareAudit = "e6a7b8c9-d0e1-4f2a-ab3c-4d5e6f7a8b9c"
 HackenbushGames = "01ec8bc2-77c0-4797-a5fe-db76a6b99454"
 HardwareResilience = "d5f6a7b8-c9d0-4e1f-9a2b-3c4d5e6f7a8b"
 InvestigativeJournalist = "379a7c0a-3675-4b32-b948-cb4760c6e442"
-JuliaKids = "c1c96f90-3ae4-433d-aa60-06e66792fdf1"
+JuliaForChildren = "c1c96f90-3ae4-433d-aa60-06e66792fdf1"
 KnotTheory = "215268c9-7579-426e-8b7c-a3dc27acd339"
 LowLevel = "a1b2c3d4-e5f6-4a1b-8c2d-3e4f5a6b7c8d"
 MacroPower = "b2c3d4e5-f6a7-4b8c-9d0e-1f2a3b4c5d6e"

Registry.toml

@@ -1,6 +1,6 @@
 name = "JuliaProfessionalRegistry"
 uuid = "2ba92a00-ca78-4729-9a29-51b4a830c8fa"
-repo = "https://github.com/hyperpolymath/HyperpolymathRegistry.git"
+repo = "https://github.com/hyperpolymath/julia-professional-registry.git"
 
 description = """
 Hyperpolymath Julia package registry. Contains all hyperpolymath Julia packages.