refactor(coding-agent/scripts): renamed dev-launch scripts and preload shim to omp paths

- Renamed `packages/coding-agent/scripts/dev-launch` to `packages/coding-agent/scripts/omp` and updated the preload script reference in that launcher.
- Renamed `packages/coding-agent/scripts/dev-launch-preload.ts` to `packages/coding-agent/scripts/omp.ts` and adjusted its header comment.
- Updated the `install:dev` script in `package.json` to symlink the global `omp` command from the renamed launcher path.

packages/coding-agent/scripts/omp.ts

@@ -0,0 +1,19 @@
+/**
+ * Bun `--preload` shim for the omp dev launcher (`scripts/omp`).
+ *
+ * The launcher starts Bun from an empty, bunfig-free directory so a foreign
+ * project's `bunfig.toml` `preload` cannot run inside the omp CLI: Bun reads
+ * `bunfig.toml` from the *current working directory* on startup and evaluates
+ * its `preload` entries before the entrypoint, so a bun-shebang bin inherits
+ * whatever `preload` the directory you launched from declares (and crashes if
+ * that preload can't resolve). This shim is loaded before the entrypoint's
+ * imports run, so it restores the user's real working directory in time for
+ * import-time snapshots (e.g. `getProjectDir()` in `@oh-my-pi/pi-utils/dirs`).
+ */
+const launchCwd = process.env.OMP_LAUNCH_CWD;
+if (launchCwd) {
+	delete process.env.OMP_LAUNCH_CWD;
+	try {
+		process.chdir(launchCwd);
+	} catch {}
+}