feat: unify workspace creation component with branch dropdown

- Rewrite WorkspaceCreateForm as unified component used in both pages
- Standalone mode (WorkspacesPage): shows project/repo/branch selectors
- Contextual mode (ProjectsPage): accepts defaultProjectId/defaultRepoId,
  skips project/repo selectors, shows only name + branch dropdown
- Branch dropdown fetched from repo via listRepositoryBranches API
- Auto-selects first/only option for project, repo, and branch
- '+ Create new branch...' option reveals text input for custom branch
- Falls back to free-text branch input if branch API fails
- Removes duplicated inline creation logic from WorkspacesPage
- TypeScript + eslint clean

apps/web/src/components/workspace-create-form.tsx

@@ -1,37 +1,152 @@
-/** Form for creating a new workspace. */
+/** Unified workspace creation form with project/repo/branch selectors. */
 
-import { useState } from "react";
+import { useState, useEffect, useCallback } from "react";
 import { Icon } from "./icon";
-import type { CreateWorkspaceRequest } from "../types/workspace";
+import { listProjects } from "../api/projects";
+import { listRepositories, listRepositoryBranches } from "../api/git_repositories";
+import { createWorkspaceTopLevel } from "../api/workspaces";
+import type { ProjectWithRepos } from "../types";
+import type { GitRepository } from "../api/git_repositories";
 
 export interface WorkspaceCreateFormProps {
-	projectId: string;
+	/** Called after successful creation. */
-	repoId: string;
+	onSubmit: () => void | Promise<void>;
-	defaultBranch?: string;
+	/** Cancel callback. */
-	onSubmit: (data: CreateWorkspaceRequest) => Promise<void>;
 	onCancel: () => void;
+	/** Optional: pre-selected project ID (hides project selector). */
+	defaultProjectId?: string;
+	/** Optional: pre-selected repo ID (hides repo selector). */
+	defaultRepoId?: string;
 }
 
 export function WorkspaceCreateForm({
-	defaultBranch = "main",
 	onSubmit,
 	onCancel,
+	defaultProjectId,
+	defaultRepoId,
 }: WorkspaceCreateFormProps) {
+	const isContextual = Boolean(defaultProjectId && defaultRepoId);
+
+	const [projects, setProjects] = useState<ProjectWithRepos[]>([]);
+	const [repos, setRepos] = useState<GitRepository[]>([]);
+	const [branches, setBranches] = useState<string[]>([]);
+	const [selectedProject, setSelectedProject] = useState(defaultProjectId ?? "");
+	const [selectedRepo, setSelectedRepo] = useState(defaultRepoId ?? "");
+	const [selectedBranch, setSelectedBranch] = useState("");
+	const [newBranchName, setNewBranchName] = useState("");
+	const [isNewBranch, setIsNewBranch] = useState(false);
 	const [name, setName] = useState("");
-	const [branch, setBranch] = useState(defaultBranch);
 	const [submitting, setSubmitting] = useState(false);
+	const [fetching, setFetching] = useState(!isContextual);
 	const [error, setError] = useState<string | null>(null);
 
+	/* ── Load projects (standalone mode only) ── */
+	const loadProjects = useCallback(async () => {
+		if (isContextual) return;
+		try {
+			const data = await listProjects();
+			setProjects(data);
+			if (data.length === 1 && !defaultProjectId) {
+				setSelectedProject(data[0].id);
+			}
+		} catch {
+			setError("Failed to load projects");
+		} finally {
+			setFetching(false);
+		}
+	}, [isContextual, defaultProjectId]);
+
+	useEffect(() => {
+		void loadProjects();
+	}, [loadProjects]);
+
+	/* ── Load repos when project changes ── */
+	useEffect(() => {
+		if (!selectedProject) {
+			setRepos([]);
+			if (!defaultRepoId) setSelectedRepo("");
+			return;
+		}
+		const loadRepos = async () => {
+			try {
+				const data = await listRepositories(selectedProject);
+				setRepos(data);
+				if (data.length === 1 && !defaultRepoId) {
+					setSelectedRepo(data[0].id);
+				}
+			} catch {
+				setError("Failed to load repositories");
+			}
+		};
+		void loadRepos();
+	}, [selectedProject, defaultRepoId]);
+
+	/* ── Load branches when repo changes ── */
+	useEffect(() => {
+		if (!selectedProject || !selectedRepo) {
+			setBranches([]);
+			setSelectedBranch("");
+			setIsNewBranch(false);
+			return;
+		}
+		const loadBranches = async () => {
+			try {
+				const data = await listRepositoryBranches(selectedProject, selectedRepo);
+				const branchNames = data.branches.map((b) => b.name);
+				setBranches(branchNames);
+				if (branchNames.length >= 1) {
+					// Prefer default branch, else first branch
+					const preferred = data.default_branch && branchNames.includes(data.default_branch)
+						? data.default_branch
+						: branchNames[0];
+					setSelectedBranch(preferred);
+					setIsNewBranch(false);
+				}
+			} catch {
+				// Fallback to free-text branch input
+				setBranches([]);
+				setIsNewBranch(true);
+				setSelectedBranch("__new__");
+			}
+		};
+		void loadBranches();
+	}, [selectedProject, selectedRepo]);
+
+	const handleBranchChange = (value: string) => {
+		if (value === "__new__") {
+			setIsNewBranch(true);
+			setSelectedBranch("__new__");
+			setNewBranchName("");
+		} else {
+			setIsNewBranch(false);
+			setSelectedBranch(value);
+		}
+	};
+
 	const handleSubmit = async (e: React.FormEvent) => {
 		e.preventDefault();
+		if (!selectedRepo) {
+			setError("Please select a repository");
+			return;
+		}
 		if (!name.trim()) {
 			setError("Workspace name is required");
 			return;
 		}
+		const branchName = isNewBranch ? newBranchName.trim() : selectedBranch;
+		if (!branchName) {
+			setError("Please select or enter a branch");
+			return;
+		}
 		setSubmitting(true);
 		setError(null);
 		try {
-			await onSubmit({ name: name.trim(), branch: branch.trim() });
+			await createWorkspaceTopLevel({
+				repo_id: selectedRepo,
+				name: name.trim(),
+				branch: branchName,
+			});
+			await onSubmit();
 		} catch (err) {
 			setError(
 				err instanceof Error ? err.message : "Failed to create workspace",
@@ -41,49 +156,149 @@ export function WorkspaceCreateForm({
 		}
 	};
 
+	if (fetching) {
+		return (
+			<div className="card workspace-create-inline">
+				<p className="muted">Loading projects...</p>
+			</div>
+		);
+	}
+
 	return (
-		<form className="workspace-create-form card" onSubmit={handleSubmit}>
+		<div className="card workspace-create-inline">
 			<h3>
 				<Icon name="add" size="sm" /> Create Workspace
 			</h3>
-			<div className="form-group">
+			<form onSubmit={handleSubmit} className="workspace-create-form-grid">
-				<label htmlFor="ws-name">Name</label>
+				{/* Project selector (standalone only) */}
-				<input
+				{!isContextual && (
-					id="ws-name"
+					<div className="form-group">
-					type="text"
+						<label>Project</label>
-					value={name}
+						<select
-					onChange={(e) => setName(e.target.value)}
+							value={selectedProject}
-					placeholder="e.g., feature-branch"
+							onChange={(e) => setSelectedProject(e.target.value)}
-					disabled={submitting}
+							required
-				/>
+						>
-			</div>
+							<option value="">Select project...</option>
-			<div className="form-group">
+							{projects.map((p) => (
-				<label htmlFor="ws-branch">
+								<option key={p.id} value={p.id}>
-					<Icon name="branch" size="sm" /> Branch
+									{p.name}
-				</label>
+								</option>
-				<input
+							))}
-					id="ws-branch"
+						</select>
-					type="text"
+					</div>
-					value={branch}
+				)}
-					onChange={(e) => setBranch(e.target.value)}
+
-					placeholder="main"
+				{/* Repo selector (standalone only) */}
-					disabled={submitting}
+				{!isContextual && (
-				/>
+					<div className="form-group">
-			</div>
+						<label>Repository</label>
-			{error && <p className="form-error">{error}</p>}
+						<select
-			<div className="form-actions">
+							value={selectedRepo}
-				<button
+							onChange={(e) => setSelectedRepo(e.target.value)}
-					type="button"
+							required
-					className="btn btn-secondary"
+							disabled={!selectedProject || repos.length === 0}
-					onClick={onCancel}
+						>
-					disabled={submitting}
+							<option value="">
-				>
+								{!selectedProject
-					Cancel
+									? "Select a project first"
-				</button>
+									: repos.length === 0
-				<button type="submit" className="btn btn-primary" disabled={submitting}>
+										? "No repositories"
-					{submitting ? "Creating..." : "Create"}
+										: "Select repository..."}
-				</button>
+							</option>
-			</div>
+							{repos.map((r) => (
-		</form>
+								<option key={r.id} value={r.id}>
+									{r.name}
+								</option>
+							))}
+						</select>
+					</div>
+				)}
+
+				<div className="form-group">
+					<label>Name</label>
+					<input
+						type="text"
+						value={name}
+						onChange={(e) => setName(e.target.value)}
+						placeholder="e.g., feature-branch"
+						required
+						disabled={submitting}
+					/>
+				</div>
+
+				<div className="form-group">
+					<label>
+						<Icon name="branch" size="sm" /> Branch
+					</label>
+					{branches.length > 0 ? (
+						<>
+							<select
+								value={selectedBranch}
+								onChange={(e) => handleBranchChange(e.target.value)}
+								required
+								disabled={!selectedRepo || submitting}
+							>
+								<option value="">Select branch...</option>
+								{branches.map((b) => (
+									<option key={b} value={b}>
+										{b}
+									</option>
+								))}
+								<option value="__new__">+ Create new branch...</option>
+							</select>
+							{isNewBranch && (
+								<input
+									type="text"
+									value={newBranchName}
+									onChange={(e) => setNewBranchName(e.target.value)}
+									placeholder="new-branch-name"
+									required
+									style={{ marginTop: "0.5rem" }}
+									disabled={submitting}
+								/>
+							)}
+						</>
+					) : (
+						<input
+							type="text"
+							value={isNewBranch ? newBranchName : selectedBranch}
+							onChange={(e) => {
+								setIsNewBranch(true);
+								setNewBranchName(e.target.value);
+								setSelectedBranch("__new__");
+							}}
+							placeholder="main"
+							required
+							disabled={!selectedRepo || submitting}
+						/>
+					)}
+				</div>
+
+				{error && (
+					<div className="form-error" style={{ gridColumn: "1 / -1" }}>
+						{error}
+					</div>
+				)}
+
+				<div className="form-actions" style={{ gridColumn: "1 / -1" }}>
+					<button
+						type="button"
+						className="btn btn-secondary"
+						onClick={onCancel}
+						disabled={submitting}
+					>
+						Cancel
+					</button>
+					<button
+						type="submit"
+						className="btn btn-primary"
+						disabled={submitting || !selectedRepo}
+					>
+						{submitting ? "Creating..." : "Create Workspace"}
+					</button>
+				</div>
+			</form>
+		</div>
 	);
 }

apps/web/src/pages/projects.tsx

@@ -11,7 +11,6 @@ import {
 	type ProjectUpdateInput,
 } from "../api/projects";
 import {
-	createWorkspace,
 	deleteWorkspace,
 	syncWorkspace,
 } from "../api/workspaces";
@@ -112,22 +111,7 @@ export const ProjectsPage = () => {
 		}
 	};
 
-	const handleCreateWorkspace = async (
+
-		projectId: string,
-		repoId: string,
-		data: { name: string; branch: string },
-	) => {
-		setWorkspaceLoading(repoId);
-		try {
-			await createWorkspace(projectId, repoId, data);
-			setCreatingWorkspace(null);
-			reload();
-		} catch (err) {
-			alert(err instanceof Error ? err.message : "Failed to create workspace");
-		} finally {
-			setWorkspaceLoading(null);
-		}
-	};
 
 	const handleSyncWorkspace = async (
 		projectId: string,
@@ -218,9 +202,10 @@ export const ProjectsPage = () => {
 									: null
 							}
 							onCancelCreate={() => setCreatingWorkspace(null)}
-							onSubmitCreate={async (repoId, data) =>
+							onCreated={() => {
-								await handleCreateWorkspace(project.id, repoId, data)
+								setCreatingWorkspace(null);
-							}
+								reload();
+							}}
 						/>
 					))}
 				</div>
@@ -299,7 +284,7 @@ function ProjectCard({
 	workspaceLoading,
 	showCreateForm,
 	onCancelCreate,
-	onSubmitCreate,
+	onCreated,
 }: {
 	project: ProjectWithRepos;
 	expanded: boolean;
@@ -318,10 +303,7 @@ function ProjectCard({
 	workspaceLoading: string | null;
 	onCancelCreate: () => void;
 	showCreateForm: string | null;
-	onSubmitCreate: (
+	onCreated: () => void;
-		repoId: string,
-		data: { name: string; branch: string },
-	) => Promise<void>;
 }) {
 	return (
 		<article className="card project-card">
@@ -399,9 +381,9 @@ function ProjectCard({
 									</div>
 									{showCreateForm === repo.id && (
 										<WorkspaceCreateForm
-											projectId={project.id}
+											defaultProjectId={project.id}
-											repoId={repo.id}
+											defaultRepoId={repo.id}
-											onSubmit={(data) => onSubmitCreate(repo.id, data)}
+											onSubmit={onCreated}
 											onCancel={onCancelCreate}
 										/>
 									)}

apps/web/src/pages/workspaces.tsx

@@ -1,18 +1,14 @@
-/** Workspaces list page with direct creation. */
+/** Workspaces list page. */
 
-import { useState, useEffect, useCallback } from "react";
+import { useState } from "react";
 import { Icon } from "../components/icon";
 import { useWorkspaces } from "../hooks/use-workspaces";
 import { useWorkspaceActions } from "../hooks/use-workspace-actions";
 import { WorkspaceCard } from "../components/workspace-card";
+import { WorkspaceCreateForm } from "../components/workspace-create-form";
 import { StartToolModal } from "../components/start-tool-modal";
 import { createInstance, startInstance } from "../api/sessions";
-import { listProjects } from "../api/projects";
-import { listRepositories, listRepositoryBranches } from "../api/git_repositories";
-import { createWorkspaceTopLevel } from "../api/workspaces";
 import type { Workspace } from "../types/workspace";
-import type { ProjectWithRepos } from "../types";
-import type { GitRepository } from "../api/git_repositories";
 
 export function WorkspacesPage() {
 	const [showCreate, setShowCreate] = useState(false);
@@ -94,10 +90,10 @@ export function WorkspacesPage() {
 			{error && <div className="alert alert-error">{error}</div>}
 
 			{showCreate && (
-				<WorkspaceCreateInline
+				<WorkspaceCreateForm
-					onCreated={() => {
+					onSubmit={async () => {
 						setShowCreate(false);
-						refresh();
+						await refresh();
 					}}
 					onCancel={() => setShowCreate(false)}
 				/>
@@ -140,274 +136,3 @@ export function WorkspacesPage() {
 		</div>
 	);
 }
-
-/* ─── Inline Workspace Creation Form ─── */
-
-function WorkspaceCreateInline({
-	onCreated,
-	onCancel,
-}: {
-	onCreated: () => void;
-	onCancel: () => void;
-}) {
-	const [projects, setProjects] = useState<ProjectWithRepos[]>([]);
-	const [repos, setRepos] = useState<GitRepository[]>([]);
-	const [branches, setBranches] = useState<string[]>([]);
-	const [selectedProject, setSelectedProject] = useState("");
-	const [selectedRepo, setSelectedRepo] = useState("");
-	const [selectedBranch, setSelectedBranch] = useState("");
-	const [newBranchName, setNewBranchName] = useState("");
-	const [isNewBranch, setIsNewBranch] = useState(false);
-	const [name, setName] = useState("");
-	const [loading, setLoading] = useState(false);
-	const [fetching, setFetching] = useState(true);
-	const [error, setError] = useState<string | null>(null);
-
-	const loadProjects = useCallback(async () => {
-		try {
-			const data = await listProjects();
-			setProjects(data);
-			if (data.length === 1) {
-				setSelectedProject(data[0].id);
-			}
-		} catch {
-			setError("Failed to load projects");
-		} finally {
-			setFetching(false);
-		}
-	}, []);
-
-	useEffect(() => {
-		void loadProjects();
-	}, [loadProjects]);
-
-	useEffect(() => {
-		if (!selectedProject) {
-			setRepos([]);
-			setSelectedRepo("");
-			return;
-		}
-		const loadRepos = async () => {
-			try {
-				const data = await listRepositories(selectedProject);
-				setRepos(data);
-				if (data.length === 1) {
-					setSelectedRepo(data[0].id);
-				}
-			} catch {
-				setError("Failed to load repositories");
-			}
-		};
-		void loadRepos();
-	}, [selectedProject]);
-
-	useEffect(() => {
-		if (!selectedProject || !selectedRepo) {
-			setBranches([]);
-			setSelectedBranch("");
-			setIsNewBranch(false);
-			return;
-		}
-		const loadBranches = async () => {
-			try {
-				const data = await listRepositoryBranches(selectedProject, selectedRepo);
-				const branchNames = data.branches.map((b) => b.name);
-				setBranches(branchNames);
-				if (branchNames.length === 1) {
-					setSelectedBranch(branchNames[0]);
-					setIsNewBranch(false);
-				} else if (data.default_branch) {
-					setSelectedBranch(data.default_branch);
-					setIsNewBranch(false);
-				}
-			} catch {
-				// If branch fetch fails, fall back to free-text
-				setBranches([]);
-				setIsNewBranch(true);
-			}
-		};
-		void loadBranches();
-	}, [selectedProject, selectedRepo]);
-
-	const handleBranchChange = (value: string) => {
-		if (value === "__new__") {
-			setIsNewBranch(true);
-			setSelectedBranch("__new__");
-			setNewBranchName("");
-		} else {
-			setIsNewBranch(false);
-			setSelectedBranch(value);
-		}
-	};
-
-	const handleSubmit = async (e: React.FormEvent) => {
-		e.preventDefault();
-		if (!selectedRepo) {
-			setError("Please select a repository");
-			return;
-		}
-		if (!name.trim()) {
-			setError("Workspace name is required");
-			return;
-		}
-		const branchName = isNewBranch ? newBranchName.trim() : selectedBranch;
-		if (!branchName) {
-			setError("Please select or enter a branch");
-			return;
-		}
-		setLoading(true);
-		setError(null);
-		try {
-			await createWorkspaceTopLevel({
-				repo_id: selectedRepo,
-				name: name.trim(),
-				branch: branchName,
-			});
-			onCreated();
-		} catch (err) {
-			setError(
-				err instanceof Error ? err.message : "Failed to create workspace",
-			);
-		} finally {
-			setLoading(false);
-		}
-	};
-
-	if (fetching) {
-		return (
-			<div className="card workspace-create-inline">
-				<p className="muted">Loading projects...</p>
-			</div>
-		);
-	}
-
-	return (
-		<div className="card workspace-create-inline">
-			<h3>
-				<Icon name="add" size="sm" /> Create Workspace
-			</h3>
-			<form onSubmit={handleSubmit} className="workspace-create-form-grid">
-				<div className="form-group">
-					<label>Project</label>
-					<select
-						value={selectedProject}
-						onChange={(e) => setSelectedProject(e.target.value)}
-						required
-					>
-						<option value="">Select project...</option>
-						{projects.map((p) => (
-							<option key={p.id} value={p.id}>
-								{p.name}
-							</option>
-						))}
-					</select>
-				</div>
-
-				<div className="form-group">
-					<label>Repository</label>
-					<select
-						value={selectedRepo}
-						onChange={(e) => setSelectedRepo(e.target.value)}
-						required
-						disabled={!selectedProject || repos.length === 0}
-					>
-						<option value="">
-							{!selectedProject
-								? "Select a project first"
-								: repos.length === 0
-									? "No repositories"
-									: "Select repository..."}
-						</option>
-						{repos.map((r) => (
-							<option key={r.id} value={r.id}>
-								{r.name}
-							</option>
-						))}
-					</select>
-				</div>
-
-				<div className="form-group">
-					<label>Name</label>
-					<input
-						type="text"
-						value={name}
-						onChange={(e) => setName(e.target.value)}
-						placeholder="e.g., feature-branch"
-						required
-					/>
-				</div>
-
-				<div className="form-group">
-					<label>
-						<Icon name="branch" size="sm" /> Branch
-					</label>
-					{branches.length > 0 ? (
-						<>
-							<select
-								value={selectedBranch}
-								onChange={(e) => handleBranchChange(e.target.value)}
-								required
-								disabled={!selectedRepo}
-							>
-								<option value="">Select branch...</option>
-								{branches.map((b) => (
-									<option key={b} value={b}>
-										{b}
-									</option>
-								))}
-								<option value="__new__">+ Create new branch...</option>
-							</select>
-							{isNewBranch && (
-								<input
-									type="text"
-									value={newBranchName}
-									onChange={(e) => setNewBranchName(e.target.value)}
-									placeholder="new-branch-name"
-									required
-									style={{ marginTop: "0.5rem" }}
-								/>
-							)}
-						</>
-					) : (
-						<input
-							type="text"
-							value={isNewBranch ? newBranchName : selectedBranch}
-							onChange={(e) => {
-								setIsNewBranch(true);
-								setNewBranchName(e.target.value);
-								setSelectedBranch("__new__");
-							}}
-							placeholder="main"
-							required
-							disabled={!selectedRepo}
-						/>
-					)}
-				</div>
-
-				{error && (
-					<div className="form-error" style={{ gridColumn: "1 / -1" }}>
-						{error}
-					</div>
-				)}
-
-				<div className="form-actions" style={{ gridColumn: "1 / -1" }}>
-					<button
-						type="button"
-						className="btn btn-secondary"
-						onClick={onCancel}
-						disabled={loading}
-					>
-						Cancel
-					</button>
-					<button
-						type="submit"
-						className="btn btn-primary"
-						disabled={loading || !selectedRepo}
-					>
-						{loading ? "Creating..." : "Create Workspace"}
-					</button>
-				</div>
-			</form>
-		</div>
-	);
-}