Rename CLI and registry references to jpm

Updates tooling branding and configuration to use the jpm name and related defaults.

- Aligns CLI messaging and docs to reference jpm instead of previous name.
- Updates registry entry defaults (repository URL, destination path).
- Changes temporary working directory prefix used during fetch operations.
- Adds project SDK configuration entries for the IDE.
- Adjusts README usage instructions to match the renamed commands.

These changes keep tooling, docs, and runtime behavior consistent with the jpm namespace.

README.md

@@ -2,21 +2,21 @@
 
 Clone a file or folder from Git repositories into your current project.
 
-`add` is registry-based (like `shadcn add`): you manage entries in a dict.
+`add` is registry-based: you manage entries in a dict.
 
 ## Usage with uvx
 
-1. Edit `jeAddons/registry.py` and add entries to `REGISTRY`.
+1. Edit `jpm/registry.py` and add entries to `REGISTRY`.
 2. Run:
 
 ```bash
-uvx jeaddons add <name> [--ref <branch-or-tag>] [--dest <target-dir>] [--force]
+uvx jpm add <name> [--ref <branch-or-tag>] [--dest <target-dir>] [--force]
 ```
 
 3. See available names:
 
 ```bash
-uvx jeaddons list
+uvx jpm list
 ```
 
 ## Registry example