feat(coding-agent): migrated CLI from custom parser to oclif framework for improved structure

- Migrated CLI from custom argument parser to oclif framework for improved command structure and maintainability.
- Reorganized CLI subcommands into individual command files under src/commands/ directory with oclif Command classes.
- Added oclif configuration to package.json with bin name 'omp', commands directory, and autocomplete plugin support.
- Refactored CLI entry point in src/cli.ts to use oclif's run() function with improved error handling.
- Simplified extension flag parsing by directly iterating raw arguments instead of using dynamic flag definitions.
- Updated CHANGELOG.md with comprehensive documentation of new oclif-based CLI commands and migration details.

packages/coding-agent/src/commands/commit.ts

@@ -0,0 +1,36 @@
+/**
+ * Generate and optionally push a commit with changelog updates.
+ */
+import { Command, Flags } from "@oclif/core";
+import { runCommitCommand } from "../commit";
+import type { CommitCommandArgs } from "../commit/types";
+import { initTheme } from "../modes/theme/theme";
+
+export default class Commit extends Command {
+	static description = "Generate a commit message and update changelogs";
+
+	static flags = {
+		push: Flags.boolean({ description: "Push after committing" }),
+		"dry-run": Flags.boolean({ description: "Preview without committing" }),
+		"no-changelog": Flags.boolean({ description: "Skip changelog updates" }),
+		legacy: Flags.boolean({ description: "Use legacy deterministic pipeline" }),
+		context: Flags.string({ char: "c", description: "Additional context for the model" }),
+		model: Flags.string({ char: "m", description: "Override model selection" }),
+	};
+
+	async run(): Promise<void> {
+		const { flags } = await this.parse(Commit);
+
+		const cmd: CommitCommandArgs = {
+			push: flags.push ?? false,
+			dryRun: flags["dry-run"] ?? false,
+			noChangelog: flags["no-changelog"] ?? false,
+			legacy: flags.legacy,
+			context: flags.context,
+			model: flags.model,
+		};
+
+		await initTheme();
+		await runCommitCommand(cmd);
+	}
+}