Add move to daily note support

CLAUDE.md

@@ -22,6 +22,14 @@ npm run build
 npm run lint
 ```
 
+## Development Workflow
+
+After every code change, run **both**:
+1. `npm run build` — type-checks and bundles
+2. `npm run lint` — ESLint (Obsidian-specific rules + TypeScript strict checks)
+
+Fix all lint errors before considering a change complete.
+
 ## Architecture
 
 ### Entry Points & Build Process

src/modals/daily-note-select-modal.ts

@@ -1,17 +1,29 @@
-import { TodoItem } from 'core/types';
-import { App, Modal, Setting, TFile } from 'obsidian';
+import { App, Modal, Notice, Setting, TFile } from 'obsidian';
+import type { TodoItem } from '../core/types';
+import { HeadingSelectModal } from './heading-select-modal';
+import {
+	removeTodoBlock,
+	insertTodoAtBeginning,
+	collectTodoBlockLines,
+} from '../core/todo-transformer';
 
 export class DailyNoteSelectModal extends Modal {
-    constructor(app: App, todo: TodoItem, file: TFile) {
+	private todo: TodoItem;
+	private sourceFile: TFile;
+	private selectedDate = '';
+
+	constructor(app: App, todo: TodoItem, sourceFile: TFile) {
 		super(app);
+		this.todo = todo;
+		this.sourceFile = sourceFile;
 		this.setTitle('Select a daily note');
 
-        let name = '';
 		new Setting(this.contentEl)
 			.setName('Date')
-        .addMomentFormat((component) => {
-            component.onChange((value) => {
-                name = value;
+			.addText((text) => {
+				text.inputEl.type = 'date';
+				text.onChange((value) => {
+					this.selectedDate = value;
 				});
 			});
 
@@ -21,9 +33,70 @@ export class DailyNoteSelectModal extends Modal {
 					.setButtonText('Submit')
 					.setCta()
 					.onClick(() => {
+						this.onSubmit();
+					})
+			);
+	}
+
+	private onSubmit(): void {
+		if (!this.selectedDate) {
+			new Notice('Please select a date.');
+			return;
+		}
+
+		const targetFile = this.findDailyNote(this.selectedDate);
+		if (!targetFile) {
+			new Notice(`No daily note found for ${this.selectedDate}.`);
+			return;
+		}
+
 		this.close();
-            // do some stuff
-            console.debug(name);
-        }));
+		this.openTargetFile(targetFile);
+	}
+
+	private findDailyNote(dateString: string): TFile | null {
+		interface DailyNotesOptions { format?: string; folder?: string; }
+		// eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
+		const options = ((this.app as any).internalPlugins?.plugins?.['daily-notes']?.instance?.options ?? {}) as DailyNotesOptions;
+		const format = options.format ?? 'YYYY-MM-DD';
+		const folder = options.folder ?? '';
+
+		const fileName = window.moment(dateString).format(format);
+		const filePath = folder ? `${folder}/${fileName}.md` : `${fileName}.md`;
+
+		const file = this.app.vault.getAbstractFileByPath(filePath);
+		return file instanceof TFile ? file : null;
+	}
+
+	private openTargetFile(targetFile: TFile): void {
+		const fileCache = this.app.metadataCache.getFileCache(targetFile);
+		const headings = fileCache?.headings ?? [];
+
+		if (headings.length > 0) {
+			new HeadingSelectModal(
+				this.app,
+				this.todo,
+				this.sourceFile,
+				targetFile,
+				headings
+			).open();
+		} else {
+			void this.moveTodo(targetFile);
+		}
+	}
+
+	private async moveTodo(targetFile: TFile): Promise<void> {
+		let blockLines: string[] = [];
+
+		await this.app.vault.process(this.sourceFile, (content) => {
+			const lines = content.split('\n');
+			const blockLineNumbers = [this.todo.lineNumber, ...collectTodoBlockLines(content, this.todo.lineNumber)];
+			blockLines = blockLineNumbers.map((ln) => lines[ln]!);
+			return removeTodoBlock(content, this.todo.lineNumber);
+		});
+
+		await this.app.vault.process(targetFile, (content) => {
+			return insertTodoAtBeginning(content, blockLines.join('\n'));
+		});
 	}
 }