hc: rename package manifest to hou-control.json

The manifest was the last artifact still carrying the old studio-utils
project name. The package is hou-control, abbreviated hc, and everything
else already followed that: the repo directory, the python package, the
HC* classes, HC_PATH, hc_hotkeys.json, hc_settings.json and the hc menu.

The filename is cosmetic. Houdini loads every JSON it finds in a packages
directory regardless of name, and nothing in the codebase referenced it,
so this changes no behavior. The installed copies under ~/houdini22.0 and
~/houdini21.0 were renamed to match.

Co-Authored-By: Claude Opus 5 <[email protected]>

 CLAUDE.md                                     | 2 +-
 houdini-studio-utils.json => hou-control.json | 0
 2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/CLAUDE.md b/CLAUDE.md
index e250d03..ecb7cba 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Overview
 
-`hou-control` (hc) is a SideFX Houdini customization package — not a standalone application. There is no build, no test suite, and no package manager. Code here is loaded by Houdini at runtime via the `houdini-studio-utils.json` package manifest (which adds this directory to `HOUDINI_PATH`) and the `HC_PATH` env var, which the code reads with `hou.getenv("HC_PATH")` to locate config/scripts on disk.
+`hou-control` (hc) is a SideFX Houdini customization package — not a standalone application. There is no build, no test suite, and no package manager. Code here is loaded by Houdini at runtime via the `hou-control.json` package manifest (which adds this directory to `HOUDINI_PATH`) and the `HC_PATH` env var, which the code reads with `hou.getenv("HC_PATH")` to locate config/scripts on disk.
 
 Everything runs inside Houdini's embedded Python 3.13. To exercise changes, reload from within Houdini:
 - From the `hc` main menu: **Reload Hotkeys**, **Reload Colors**, **Reload Keycam**.
diff --git a/houdini-studio-utils.json b/hou-control.json
similarity index 100%
rename from houdini-studio-utils.json
rename to hou-control.json