Changeset 0.21.4 (#90)

CHANGELOG.md

@@ -2,6 +2,27 @@
 
 All notable changes to Chat Switchboard.
 
+## [0.21.4] — 2026-03-01
+
+### Added
+- **Git Integration.** Workspaces can now track a git remote. Operations use `os/exec` calling the `git` binary (no CGO, no Go git libraries). Credentials are vault-encrypted (AES-256-GCM) using the same pattern as BYOK provider configs.
+- **`git_credentials` table.** Postgres + SQLite migrations. Stores encrypted PAT tokens, HTTP basic auth, and SSH private keys. Columns: id, user_id, name, auth_type, encrypted_data, nonce, created_at.
+- **Workspace git columns.** `git_remote_url`, `git_branch`, `git_credential_id`, `git_last_sync` added to `workspaces` table via migration.
+- **`workspace.GitOps`** — exec-based git operations: Clone, Pull, Push, Status, Diff, Commit, Log, BranchList, Checkout. Credential injection via temporary `GIT_ASKPASS` scripts (PAT), `.git-credentials` files (basic auth), or `GIT_SSH_COMMAND` (SSH keys). Temp files securely wiped after each operation.
+- **Post-operation hooks.** Clone, pull, and checkout automatically trigger workspace reconcile (filesystem → DB sync) and re-index changed files through the v0.21.2 indexing pipeline.
+- **5 git tools** for LLM use: `git_status`, `git_diff`, `git_commit`, `git_log`, `git_branch`. Filtered out when no workspace is bound. Each validates git remote configuration before execution.
+- **9 git API endpoints:** `POST clone`, `POST pull`, `POST push`, `GET status`, `GET diff`, `POST commit`, `GET log`, `GET branches`, `POST checkout` — all under `/api/v1/workspaces/:id/git/`.
+- **3 credential endpoints:** `POST /api/v1/git-credentials` (create), `GET /api/v1/git-credentials` (list user-scoped summaries), `DELETE /api/v1/git-credentials/:id` (delete). Encrypted data never exposed in API responses.
+- **`GitCredentialStore` interface** + Postgres/SQLite implementations. Create, GetByID, ListByUser, Delete with user-scoped authorization.
+- **Security.** `file://` and local path URLs rejected in clone. Error output sanitized to strip credential-containing lines. `GIT_TERMINAL_PROMPT=0` set on all operations to prevent interactive prompts.
+
+### Changed
+- `WorkspaceStore` interface: added `SetGitLastSync()` method + both implementations.
+- `models.Workspace`: added git tracking fields. `models.WorkspacePatch`: added git patch fields.
+- Completion handler: git tools disabled alongside workspace tools when no workspace bound.
+- `store.Stores` struct: added `GitCredentials` field.
+- Postgres/SQLite `NewStores()`: wires `GitCredentialStore`.
+
 ## [0.21.3] — 2026-03-01
 
 ### Added

VERSION

@@ -1 +1 @@
-0.21.3
+0.21.4

docs/ROADMAP.md

@@ -88,7 +88,7 @@ v0.21.1 Workspace ✅   v0.21.3 Surface Infra ✅
 v0.21.2 Workspace ✅   v0.21.5 Editor Surface
   Indexing + Search      (Development Mode)
   │                      │
-v0.21.4 Git            v0.21.6 Article Surface
+v0.21.4 Git ✅         v0.21.6 Article Surface
   Integration            + Document Output
   └───────┬──────────────┘
           │
@@ -747,15 +747,30 @@ Pure UI architecture. No workspace dependency (parallel development).
 - [ ] Mobile: mode selector collapses to hamburger/bottom nav (deferred — functions via sidebar on mobile)
 - [ ] Integration with extension loader (surfaces from manifest — deferred to extension loader update)
 
-### v0.21.4 — Git Integration
+### v0.21.4 — Git Integration ✅
 
 Layer git operations onto workspaces.
 
-- [ ] `workspaces` additions: git_remote_url, git_branch, git_credential_id, git_last_sync
+- [x] `workspaces` additions: git_remote_url, git_branch, git_credential_id, git_last_sync
-- [ ] `git_credentials` table: auth_type (https_pat/https_basic/ssh_key), encrypted_data (AES-256-GCM)
+- [x] `git_credentials` table: auth_type (https_pat/https_basic/ssh_key), encrypted_data (AES-256-GCM)
-- [ ] Git operations via exec: clone, pull, push, status, diff, commit, log, branch, checkout
+- [x] Postgres migration (012_v0214_git.sql) + SQLite migration (011_v0214_git.sql)
-- [ ] Workspace tools (git-aware): `git_status`, `git_diff`, `git_commit`, `git_log`, `git_branch`
+- [x] `models.GitCredential`, `GitCredentialSummary`, `GitStatus`, `GitFileStatus`, `GitLogEntry`
-- [ ] Post-operation hooks: clone/pull/checkout trigger reconcile + re-index changed files
+- [x] `GitCredentialStore` interface + Postgres/SQLite implementations (Create, GetByID, ListByUser, Delete)
+- [x] `workspace.GitOps` with exec-based git operations (9 operations)
+- [x] Credential injection: temp `GIT_ASKPASS` (PAT), `.git-credentials` (basic), `GIT_SSH_COMMAND` (SSH)
+- [x] Security: reject file:// URLs, sanitize error output, GIT_TERMINAL_PROMPT=0
+- [x] Clone, Pull, Push, Status, Diff, Commit, Log, BranchList, Checkout
+- [x] `SetGitLastSync` on WorkspaceStore interface + both implementations
+- [x] Post-operation reconcile + re-index hook (clone, pull, checkout)
+- [x] 5 git tools: git_status, git_diff, git_commit, git_log, git_branch
+- [x] Git tools filtered out when no workspace bound (completion handler)
+- [x] 9 git API endpoints on /api/v1/workspaces/:id/git/*
+- [x] 3 credential CRUD endpoints on /api/v1/git-credentials
+- [x] Wired in main.go: GitOps creation, tool registration, route registration
+- [ ] Workspace settings UI: git config section (deferred to frontend sprint)
+- [ ] User Settings: git credentials management UI (deferred to frontend sprint)
+- [ ] Integration tests: clone, commit, push/pull cycle (requires git binary in CI)
+- [ ] `.gitignore` respect in workspace indexing (deferred to v0.21.5+)
 
 ### v0.21.5 — Editor Surface (Development Mode)
 

server/database/migrations/012_v0214_git.sql

@@ -0,0 +1,21 @@
+-- v0.21.4: Git integration — credentials table + workspace git columns.
+
+-- Git credentials: encrypted storage for PAT, basic auth, and SSH keys.
+-- Uses the same AES-256-GCM vault pattern as BYOK provider configs.
+CREATE TABLE IF NOT EXISTS git_credentials (
+    id          UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id     UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    name        TEXT NOT NULL DEFAULT '',
+    auth_type   TEXT NOT NULL DEFAULT 'https_pat',  -- https_pat, https_basic, ssh_key
+    encrypted_data BYTEA NOT NULL DEFAULT '',
+    nonce       BYTEA NOT NULL DEFAULT '',
+    created_at  TIMESTAMPTZ NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_git_credentials_user ON git_credentials(user_id);
+
+-- Workspace git tracking columns.
+ALTER TABLE workspaces ADD COLUMN IF NOT EXISTS git_remote_url    TEXT;
+ALTER TABLE workspaces ADD COLUMN IF NOT EXISTS git_branch        TEXT;
+ALTER TABLE workspaces ADD COLUMN IF NOT EXISTS git_credential_id UUID REFERENCES git_credentials(id) ON DELETE SET NULL;
+ALTER TABLE workspaces ADD COLUMN IF NOT EXISTS git_last_sync     TIMESTAMPTZ;

server/database/migrations/sqlite/011_v0214_git.sql

@@ -0,0 +1,19 @@
+-- v0.21.4: Git integration — credentials table + workspace git columns.
+
+CREATE TABLE IF NOT EXISTS git_credentials (
+    id              TEXT PRIMARY KEY,
+    user_id         TEXT NOT NULL,
+    name            TEXT NOT NULL DEFAULT '',
+    auth_type       TEXT NOT NULL DEFAULT 'https_pat',
+    encrypted_data  TEXT NOT NULL DEFAULT '',
+    nonce           TEXT NOT NULL DEFAULT '',
+    created_at      TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE INDEX IF NOT EXISTS idx_git_credentials_user ON git_credentials(user_id);
+
+-- Workspace git tracking columns.
+ALTER TABLE workspaces ADD COLUMN git_remote_url    TEXT;
+ALTER TABLE workspaces ADD COLUMN git_branch        TEXT;
+ALTER TABLE workspaces ADD COLUMN git_credential_id TEXT;
+ALTER TABLE workspaces ADD COLUMN git_last_sync     TEXT;

server/handlers/completion.go

@@ -402,11 +402,14 @@ func (h *CompletionHandler) buildToolDefs(ctx context.Context, userID string, in
 		disabled[name] = true
 	}
 
-	// If no workspace is bound, disable workspace tools
+	// If no workspace is bound, disable workspace + git tools
 	if workspaceID == "" {
 		for _, name := range tools.WorkspaceToolNames() {
 			disabled[name] = true
 		}
+		for _, name := range tools.GitToolNames() {
+			disabled[name] = true
+		}
 	}
 
 	allTools := tools.AllDefinitionsFiltered(disabled)

server/handlers/git.go

@@ -0,0 +1,333 @@
+package handlers
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"git.gobha.me/xcaliber/chat-switchboard/crypto"
+	"git.gobha.me/xcaliber/chat-switchboard/models"
+	"git.gobha.me/xcaliber/chat-switchboard/store"
+	"git.gobha.me/xcaliber/chat-switchboard/workspace"
+
+	"github.com/gin-gonic/gin"
+)
+
+// =========================================
+// GIT HANDLER — Git operations on workspaces
+// =========================================
+
+type GitHandler struct {
+	stores store.Stores
+	gitOps *workspace.GitOps
+}
+
+func NewGitHandler(s store.Stores, gitOps *workspace.GitOps) *GitHandler {
+	return &GitHandler{stores: s, gitOps: gitOps}
+}
+
+// ── Clone ────────────────────────────────────
+
+func (h *GitHandler) Clone(c *gin.Context) {
+	wsID := c.Param("id")
+	var req struct {
+		URL          string `json:"url" binding:"required"`
+		Branch       string `json:"branch"`
+		CredentialID string `json:"credential_id"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	w, err := h.stores.Workspaces.GetByID(c.Request.Context(), wsID)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "workspace not found"})
+		return
+	}
+
+	if err := h.gitOps.Clone(c.Request.Context(), w, req.URL, req.Branch, req.CredentialID); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"status": "cloned"})
+}
+
+// ── Pull ─────────────────────────────────────
+
+func (h *GitHandler) Pull(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	if err := h.gitOps.Pull(c.Request.Context(), w); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"status": "pulled"})
+}
+
+// ── Push ─────────────────────────────────────
+
+func (h *GitHandler) Push(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	if err := h.gitOps.Push(c.Request.Context(), w); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"status": "pushed"})
+}
+
+// ── Status ───────────────────────────────────
+
+func (h *GitHandler) Status(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	status, err := h.gitOps.Status(c.Request.Context(), w)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, status)
+}
+
+// ── Diff ─────────────────────────────────────
+
+func (h *GitHandler) Diff(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	path := c.Query("path")
+	diff, err := h.gitOps.Diff(c.Request.Context(), w, path)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"diff": diff})
+}
+
+// ── Commit ───────────────────────────────────
+
+func (h *GitHandler) Commit(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	var req struct {
+		Message string   `json:"message" binding:"required"`
+		Paths   []string `json:"paths"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	if err := h.gitOps.Commit(c.Request.Context(), w, req.Message, req.Paths); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"status": "committed"})
+}
+
+// ── Log ──────────────────────────────────────
+
+func (h *GitHandler) Log(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	n := 20
+	if v := c.Query("n"); v != "" {
+		if parsed, err := strconv.Atoi(v); err == nil && parsed > 0 {
+			n = parsed
+			if n > 100 {
+				n = 100
+			}
+		}
+	}
+	entries, err := h.gitOps.Log(c.Request.Context(), w, n)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, entries)
+}
+
+// ── Branches ─────────────────────────────────
+
+func (h *GitHandler) Branches(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	branches, current, err := h.gitOps.BranchList(c.Request.Context(), w)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"current":  current,
+		"branches": branches,
+	})
+}
+
+// ── Checkout ─────────────────────────────────
+
+func (h *GitHandler) Checkout(c *gin.Context) {
+	w, err := h.loadWorkspace(c)
+	if err != nil {
+		return
+	}
+	var req struct {
+		Branch string `json:"branch" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	if err := h.gitOps.Checkout(c.Request.Context(), w, req.Branch); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"status": "checked out", "branch": req.Branch})
+}
+
+// loadWorkspace loads the workspace and validates git is configured.
+func (h *GitHandler) loadWorkspace(c *gin.Context) (*models.Workspace, error) {
+	wsID := c.Param("id")
+	w, err := h.stores.Workspaces.GetByID(c.Request.Context(), wsID)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "workspace not found"})
+		return nil, err
+	}
+	if w.GitRemoteURL == nil || *w.GitRemoteURL == "" {
+		err := fmt.Errorf("workspace has no git remote configured")
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return nil, err
+	}
+	return w, nil
+}
+
+// =========================================
+// GIT CREDENTIAL HANDLER — CRUD for encrypted git credentials
+// =========================================
+
+type GitCredentialHandler struct {
+	stores store.Stores
+	vault  *crypto.KeyResolver
+}
+
+func NewGitCredentialHandler(s store.Stores, vault *crypto.KeyResolver) *GitCredentialHandler {
+	return &GitCredentialHandler{stores: s, vault: vault}
+}
+
+// Create stores a new encrypted git credential.
+func (h *GitCredentialHandler) Create(c *gin.Context) {
+	userID := getUserID(c)
+	var req struct {
+		Name     string `json:"name" binding:"required"`
+		AuthType string `json:"auth_type" binding:"required"`
+		// Raw credential data — encrypted before storage
+		Token      string `json:"token,omitempty"`      // for https_pat
+		Username   string `json:"username,omitempty"`    // for https_basic
+		Password   string `json:"password,omitempty"`    // for https_basic
+		PrivateKey string `json:"private_key,omitempty"` // for ssh_key
+		Passphrase string `json:"passphrase,omitempty"`  // for ssh_key
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// Validate auth type
+	switch req.AuthType {
+	case "https_pat":
+		if req.Token == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "token is required for https_pat"})
+			return
+		}
+	case "https_basic":
+		if req.Username == "" || req.Password == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "username and password required for https_basic"})
+			return
+		}
+	case "ssh_key":
+		if req.PrivateKey == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "private_key is required for ssh_key"})
+			return
+		}
+	default:
+		c.JSON(http.StatusBadRequest, gin.H{"error": "auth_type must be https_pat, https_basic, or ssh_key"})
+		return
+	}
+
+	// Build plaintext JSON
+	var credData map[string]string
+	switch req.AuthType {
+	case "https_pat":
+		credData = map[string]string{"token": req.Token}
+	case "https_basic":
+		credData = map[string]string{"username": req.Username, "password": req.Password}
+	case "ssh_key":
+		credData = map[string]string{"private_key": req.PrivateKey, "passphrase": req.Passphrase}
+	}
+	plaintext, _ := json.Marshal(credData)
+
+	// Encrypt using global scope (same vault pattern as BYOK)
+	ciphertext, nonce, err := h.vault.EncryptForScope(string(plaintext), "global", userID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "encryption failed"})
+		return
+	}
+
+	cred := &models.GitCredential{
+		UserID:        userID,
+		Name:          req.Name,
+		AuthType:      req.AuthType,
+		EncryptedData: ciphertext,
+		Nonce:         nonce,
+	}
+
+	if err := h.stores.GitCredentials.Create(c.Request.Context(), cred); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, cred.Summary())
+}
+
+// List returns all git credentials for the current user (summaries only).
+func (h *GitCredentialHandler) List(c *gin.Context) {
+	userID := getUserID(c)
+	creds, err := h.stores.GitCredentials.ListByUser(c.Request.Context(), userID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	summaries := make([]models.GitCredentialSummary, 0, len(creds))
+	for _, cred := range creds {
+		summaries = append(summaries, cred.Summary())
+	}
+	c.JSON(http.StatusOK, summaries)
+}
+
+// Delete removes a git credential.
+func (h *GitCredentialHandler) Delete(c *gin.Context) {
+	userID := getUserID(c)
+	credID := c.Param("id")
+
+	if err := h.stores.GitCredentials.Delete(c.Request.Context(), credID, userID); err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "credential not found"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"deleted": true})
+}

server/main.go

@@ -205,6 +205,15 @@ func main() {
 	// Register workspace_search tool (needs embedder for query embedding)
 	tools.RegisterWorkspaceSearchTool(stores, kbEmbedder)
 
+	// ── Git Integration (v0.21.4) ────────────
+	// GitOps wraps exec-based git operations with vault credential injection.
+	var gitOps *workspace.GitOps
+	if wfs != nil {
+		gitOps = workspace.NewGitOps(wfs, stores, keyResolver, wsIndexer)
+		tools.RegisterGitTools(gitOps)
+		log.Println("  🔀 Git integration enabled")
+	}
+
 	// Register context recall tools (v0.15.1)
 	tools.RegisterAttachmentRecall(stores, objStore)
 	tools.RegisterConversationSearch(stores)
@@ -458,8 +467,28 @@ func main() {
 				protected.POST("/workspaces/:id/reconcile", wsH.Reconcile)
 				protected.GET("/workspaces/:id/stats", wsH.Stats)
 				protected.GET("/workspaces/:id/index-status", wsH.IndexStatus)
+
+				// Git operations (v0.21.4)
+				if gitOps != nil {
+					gitH := handlers.NewGitHandler(stores, gitOps)
+					protected.POST("/workspaces/:id/git/clone", gitH.Clone)
+					protected.POST("/workspaces/:id/git/pull", gitH.Pull)
+					protected.POST("/workspaces/:id/git/push", gitH.Push)
+					protected.GET("/workspaces/:id/git/status", gitH.Status)
+					protected.GET("/workspaces/:id/git/diff", gitH.Diff)
+					protected.POST("/workspaces/:id/git/commit", gitH.Commit)
+					protected.GET("/workspaces/:id/git/log", gitH.Log)
+					protected.GET("/workspaces/:id/git/branches", gitH.Branches)
+					protected.POST("/workspaces/:id/git/checkout", gitH.Checkout)
+				}
 			}
 
+			// Git credentials (v0.21.4) — user-scoped, independent of workspace
+			gitCredH := handlers.NewGitCredentialHandler(stores, keyResolver)
+			protected.POST("/git-credentials", gitCredH.Create)
+			protected.GET("/git-credentials", gitCredH.List)
+			protected.DELETE("/git-credentials/:id", gitCredH.Delete)
+
 			// Attachments (file upload/download)
 			attachH := handlers.NewAttachmentHandler(stores, objStore, extQueue)
 			protected.POST("/channels/:id/attachments", attachH.Upload)

server/models/models_git.go

@@ -0,0 +1,61 @@
+package models
+
+import "time"
+
+// GitCredential stores encrypted git authentication credentials.
+// The encrypted_data field contains JSON: { "token": "..." } for PAT,
+// { "username": "...", "password": "..." } for basic auth, or
+// { "private_key": "...", "passphrase": "..." } for SSH keys.
+type GitCredential struct {
+	ID            string    `json:"id" db:"id"`
+	UserID        string    `json:"user_id" db:"user_id"`
+	Name          string    `json:"name" db:"name"`
+	AuthType      string    `json:"auth_type" db:"auth_type"` // https_pat, https_basic, ssh_key
+	EncryptedData []byte    `json:"-" db:"encrypted_data"`    // never expose
+	Nonce         []byte    `json:"-" db:"nonce"`             // never expose
+	CreatedAt     time.Time `json:"created_at" db:"created_at"`
+}
+
+// GitCredentialSummary is the safe-to-expose version (no encrypted data).
+type GitCredentialSummary struct {
+	ID        string    `json:"id"`
+	Name      string    `json:"name"`
+	AuthType  string    `json:"auth_type"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+// Summary returns a safe version without encrypted fields.
+func (c *GitCredential) Summary() GitCredentialSummary {
+	return GitCredentialSummary{
+		ID:        c.ID,
+		Name:      c.Name,
+		AuthType:  c.AuthType,
+		CreatedAt: c.CreatedAt,
+	}
+}
+
+// GitStatus represents the output of git status.
+type GitStatus struct {
+	Branch    string           `json:"branch"`
+	Clean     bool             `json:"clean"`
+	Ahead     int              `json:"ahead"`
+	Behind    int              `json:"behind"`
+	Staged    []GitFileStatus  `json:"staged,omitempty"`
+	Modified  []GitFileStatus  `json:"modified,omitempty"`
+	Untracked []string         `json:"untracked,omitempty"`
+}
+
+// GitFileStatus represents a single file in git status output.
+type GitFileStatus struct {
+	Path   string `json:"path"`
+	Status string `json:"status"` // M, A, D, R, C, U
+}
+
+// GitLogEntry represents a single commit in git log.
+type GitLogEntry struct {
+	Hash      string    `json:"hash"`
+	ShortHash string    `json:"short_hash"`
+	Author    string    `json:"author"`
+	Date      time.Time `json:"date"`
+	Message   string    `json:"message"`
+}

server/models/models_workspace.go

@@ -33,6 +33,12 @@ type Workspace struct {
 
 	IndexingEnabled bool `json:"indexing_enabled" db:"indexing_enabled"`
 
+	// Git integration (v0.21.4)
+	GitRemoteURL    *string    `json:"git_remote_url,omitempty" db:"git_remote_url"`
+	GitBranch       *string    `json:"git_branch,omitempty" db:"git_branch"`
+	GitCredentialID *string    `json:"git_credential_id,omitempty" db:"git_credential_id"`
+	GitLastSync     *time.Time `json:"git_last_sync,omitempty" db:"git_last_sync"`
+
 	// Computed fields (not DB columns)
 	FileCount  int   `json:"file_count,omitempty"`
 	TotalBytes int64 `json:"total_bytes,omitempty"`
@@ -44,6 +50,11 @@ type WorkspacePatch struct {
 	MaxBytes        *int64  `json:"max_bytes,omitempty"`
 	Status          *string `json:"status,omitempty"`
 	IndexingEnabled *bool   `json:"indexing_enabled,omitempty"`
+
+	// Git integration (v0.21.4)
+	GitRemoteURL    *string `json:"git_remote_url,omitempty"`
+	GitBranch       *string `json:"git_branch,omitempty"`
+	GitCredentialID *string `json:"git_credential_id,omitempty"`
 }
 
 // WorkspaceFile represents metadata for a single file or directory in a workspace.

server/store/interfaces.go

@@ -43,6 +43,7 @@ type Stores struct {
 	Notifications  NotificationStore
 	NotifPrefs     NotificationPreferenceStore
 	Workspaces     WorkspaceStore
+	GitCredentials GitCredentialStore
 }
 
 // =========================================
@@ -545,6 +546,20 @@ type WorkspaceStore interface {
 	DeleteChunksByFile(ctx context.Context, fileID string) error
 	SimilaritySearch(ctx context.Context, workspaceID string, queryVec []float64, threshold float64, limit int) ([]models.WorkspaceChunkResult, error)
 	UpdateFileIndexStatus(ctx context.Context, fileID, status string, chunkCount int) error
+
+	// Git (v0.21.4)
+	SetGitLastSync(ctx context.Context, workspaceID string, t time.Time) error
+}
+
+// =========================================
+// GIT CREDENTIAL STORE (v0.21.4)
+// =========================================
+
+type GitCredentialStore interface {
+	Create(ctx context.Context, cred *models.GitCredential) error
+	GetByID(ctx context.Context, id string) (*models.GitCredential, error)
+	ListByUser(ctx context.Context, userID string) ([]models.GitCredential, error)
+	Delete(ctx context.Context, id, userID string) error
 }
 
 // =========================================

server/store/postgres/git_credentials.go

@@ -0,0 +1,76 @@
+package postgres
+
+import (
+	"context"
+	"database/sql"
+
+	"git.gobha.me/xcaliber/chat-switchboard/models"
+)
+
+// GitCredentialStore implements store.GitCredentialStore for PostgreSQL.
+type GitCredentialStore struct{}
+
+func (s *GitCredentialStore) Create(ctx context.Context, cred *models.GitCredential) error {
+	if cred.ID != "" {
+		return DB.QueryRowContext(ctx, `
+			INSERT INTO git_credentials (id, user_id, name, auth_type, encrypted_data, nonce)
+			VALUES ($1, $2, $3, $4, $5, $6)
+			RETURNING created_at`,
+			cred.ID, cred.UserID, cred.Name, cred.AuthType,
+			cred.EncryptedData, cred.Nonce,
+		).Scan(&cred.CreatedAt)
+	}
+	return DB.QueryRowContext(ctx, `
+		INSERT INTO git_credentials (user_id, name, auth_type, encrypted_data, nonce)
+		VALUES ($1, $2, $3, $4, $5)
+		RETURNING id, created_at`,
+		cred.UserID, cred.Name, cred.AuthType,
+		cred.EncryptedData, cred.Nonce,
+	).Scan(&cred.ID, &cred.CreatedAt)
+}
+
+func (s *GitCredentialStore) GetByID(ctx context.Context, id string) (*models.GitCredential, error) {
+	var c models.GitCredential
+	err := DB.QueryRowContext(ctx, `
+		SELECT id, user_id, name, auth_type, encrypted_data, nonce, created_at
+		FROM git_credentials WHERE id = $1`, id,
+	).Scan(&c.ID, &c.UserID, &c.Name, &c.AuthType,
+		&c.EncryptedData, &c.Nonce, &c.CreatedAt)
+	if err != nil {
+		return nil, err
+	}
+	return &c, nil
+}
+
+func (s *GitCredentialStore) ListByUser(ctx context.Context, userID string) ([]models.GitCredential, error) {
+	rows, err := DB.QueryContext(ctx, `
+		SELECT id, user_id, name, auth_type, encrypted_data, nonce, created_at
+		FROM git_credentials WHERE user_id = $1 ORDER BY created_at DESC`, userID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var creds []models.GitCredential
+	for rows.Next() {
+		var c models.GitCredential
+		if err := rows.Scan(&c.ID, &c.UserID, &c.Name, &c.AuthType,
+			&c.EncryptedData, &c.Nonce, &c.CreatedAt); err != nil {
+			return nil, err
+		}
+		creds = append(creds, c)
+	}
+	return creds, rows.Err()
+}
+
+func (s *GitCredentialStore) Delete(ctx context.Context, id, userID string) error {
+	res, err := DB.ExecContext(ctx, `DELETE FROM git_credentials WHERE id = $1 AND user_id = $2`, id, userID)
+	if err != nil {
+		return err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return sql.ErrNoRows
+	}
+	return nil
+}

server/store/postgres/stores.go

@@ -36,5 +36,6 @@ func NewStores(db *sql.DB) store.Stores {
 		Notifications:  NewNotificationStore(),
 		NotifPrefs:     NewNotificationPreferenceStore(),
 		Workspaces:     NewWorkspaceStore(),
+		GitCredentials: &GitCredentialStore{},
 	}
 }

server/store/postgres/workspace.go

@@ -16,7 +16,7 @@ func NewWorkspaceStore() *WorkspaceStore { return &WorkspaceStore{} }
 
 // ── columns ────────────────────────────────
 
-const workspaceCols = `id, owner_type, owner_id, name, root_path, max_bytes, status, indexing_enabled, created_at, updated_at`
+const workspaceCols = `id, owner_type, owner_id, name, root_path, max_bytes, status, indexing_enabled, git_remote_url, git_branch, git_credential_id, git_last_sync, created_at, updated_at`
 const workspaceFileCols = `id, workspace_id, path, is_directory, content_type, size_bytes, sha256, index_status, chunk_count, created_at, updated_at`
 
 // ── scanners ───────────────────────────────
@@ -24,9 +24,12 @@ const workspaceFileCols = `id, workspace_id, path, is_directory, content_type, s
 func scanWorkspace(row interface{ Scan(dest ...interface{}) error }) (*models.Workspace, error) {
 	var w models.Workspace
 	var maxBytes sql.NullInt64
+	var gitRemote, gitBranch, gitCredID sql.NullString
+	var gitSync sql.NullTime
 	err := row.Scan(
 		&w.ID, &w.OwnerType, &w.OwnerID, &w.Name,
 		&w.RootPath, &maxBytes, &w.Status, &w.IndexingEnabled,
+		&gitRemote, &gitBranch, &gitCredID, &gitSync,
 		&w.CreatedAt, &w.UpdatedAt,
 	)
 	if err != nil {
@@ -35,6 +38,18 @@ func scanWorkspace(row interface{ Scan(dest ...interface{}) error }) (*models.Wo
 	if maxBytes.Valid {
 		w.MaxBytes = &maxBytes.Int64
 	}
+	if gitRemote.Valid {
+		w.GitRemoteURL = &gitRemote.String
+	}
+	if gitBranch.Valid {
+		w.GitBranch = &gitBranch.String
+	}
+	if gitCredID.Valid {
+		w.GitCredentialID = &gitCredID.String
+	}
+	if gitSync.Valid {
+		w.GitLastSync = &gitSync.Time
+	}
 	return &w, nil
 }
 
@@ -106,6 +121,15 @@ func (s *WorkspaceStore) Update(ctx context.Context, id string, patch models.Wor
 	if patch.IndexingEnabled != nil {
 		b.Set("indexing_enabled", *patch.IndexingEnabled)
 	}
+	if patch.GitRemoteURL != nil {
+		b.Set("git_remote_url", *patch.GitRemoteURL)
+	}
+	if patch.GitBranch != nil {
+		b.Set("git_branch", *patch.GitBranch)
+	}
+	if patch.GitCredentialID != nil {
+		b.Set("git_credential_id", *patch.GitCredentialID)
+	}
 	if !b.HasSets() {
 		return nil
 	}
@@ -365,3 +389,10 @@ func (s *WorkspaceStore) UpdateFileIndexStatus(ctx context.Context, fileID, stat
 		status, chunkCount, fileID)
 	return err
 }
+
+func (s *WorkspaceStore) SetGitLastSync(ctx context.Context, workspaceID string, t time.Time) error {
+	_, err := DB.ExecContext(ctx,
+		`UPDATE workspaces SET git_last_sync = $1, updated_at = NOW() WHERE id = $2`,
+		t, workspaceID)
+	return err
+}

server/store/sqlite/git_credentials.go

@@ -0,0 +1,86 @@
+package sqlite
+
+import (
+	"context"
+	"database/sql"
+	"encoding/base64"
+
+	"git.gobha.me/xcaliber/chat-switchboard/models"
+
+	"github.com/google/uuid"
+)
+
+// GitCredentialStore implements store.GitCredentialStore for SQLite.
+type GitCredentialStore struct{}
+
+func (s *GitCredentialStore) Create(ctx context.Context, cred *models.GitCredential) error {
+	if cred.ID == "" {
+		cred.ID = uuid.NewString()
+	}
+	_, err := DB.ExecContext(ctx, `
+		INSERT INTO git_credentials (id, user_id, name, auth_type, encrypted_data, nonce, created_at)
+		VALUES (?, ?, ?, ?, ?, ?, datetime('now'))`,
+		cred.ID, cred.UserID, cred.Name, cred.AuthType,
+		base64.StdEncoding.EncodeToString(cred.EncryptedData),
+		base64.StdEncoding.EncodeToString(cred.Nonce),
+	)
+	if err != nil {
+		return err
+	}
+	// Read back created_at
+	return DB.QueryRowContext(ctx,
+		`SELECT created_at FROM git_credentials WHERE id = ?`, cred.ID,
+	).Scan(st(&cred.CreatedAt))
+}
+
+func (s *GitCredentialStore) GetByID(ctx context.Context, id string) (*models.GitCredential, error) {
+	var c models.GitCredential
+	var encData, nonce string
+	err := DB.QueryRowContext(ctx, `
+		SELECT id, user_id, name, auth_type, encrypted_data, nonce, created_at
+		FROM git_credentials WHERE id = ?`, id,
+	).Scan(&c.ID, &c.UserID, &c.Name, &c.AuthType,
+		&encData, &nonce, st(&c.CreatedAt))
+	if err != nil {
+		return nil, err
+	}
+	c.EncryptedData, _ = base64.StdEncoding.DecodeString(encData)
+	c.Nonce, _ = base64.StdEncoding.DecodeString(nonce)
+	return &c, nil
+}
+
+func (s *GitCredentialStore) ListByUser(ctx context.Context, userID string) ([]models.GitCredential, error) {
+	rows, err := DB.QueryContext(ctx, `
+		SELECT id, user_id, name, auth_type, encrypted_data, nonce, created_at
+		FROM git_credentials WHERE user_id = ? ORDER BY created_at DESC`, userID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var creds []models.GitCredential
+	for rows.Next() {
+		var c models.GitCredential
+		var encData, nonce string
+		if err := rows.Scan(&c.ID, &c.UserID, &c.Name, &c.AuthType,
+			&encData, &nonce, st(&c.CreatedAt)); err != nil {
+			return nil, err
+		}
+		c.EncryptedData, _ = base64.StdEncoding.DecodeString(encData)
+		c.Nonce, _ = base64.StdEncoding.DecodeString(nonce)
+		creds = append(creds, c)
+	}
+	return creds, rows.Err()
+}
+
+func (s *GitCredentialStore) Delete(ctx context.Context, id, userID string) error {
+	res, err := DB.ExecContext(ctx, `DELETE FROM git_credentials WHERE id = ? AND user_id = ?`, id, userID)
+	if err != nil {
+		return err
+	}
+	n, _ := res.RowsAffected()
+	if n == 0 {
+		return sql.ErrNoRows
+	}
+	return nil
+}

server/store/sqlite/stores.go

@@ -36,5 +36,6 @@ func NewStores(db *sql.DB) store.Stores {
 		Notifications:  NewNotificationStore(),
 		NotifPrefs:     NewNotificationPreferenceStore(),
 		Workspaces:     NewWorkspaceStore(),
+		GitCredentials: &GitCredentialStore{},
 	}
 }

server/store/sqlite/workspace.go

@@ -20,7 +20,7 @@ func NewWorkspaceStore() *WorkspaceStore { return &WorkspaceStore{} }
 
 // ── columns ────────────────────────────────
 
-const workspaceCols = `id, owner_type, owner_id, name, root_path, max_bytes, status, indexing_enabled, created_at, updated_at`
+const workspaceCols = `id, owner_type, owner_id, name, root_path, max_bytes, status, indexing_enabled, git_remote_url, git_branch, git_credential_id, git_last_sync, created_at, updated_at`
 const workspaceFileCols = `id, workspace_id, path, is_directory, content_type, size_bytes, sha256, index_status, chunk_count, created_at, updated_at`
 
 // ── scanners ───────────────────────────────
@@ -28,9 +28,11 @@ const workspaceFileCols = `id, workspace_id, path, is_directory, content_type, s
 func scanWorkspace(row interface{ Scan(dest ...interface{}) error }) (*models.Workspace, error) {
 	var w models.Workspace
 	var maxBytes sql.NullInt64
+	var gitRemote, gitBranch, gitCredID sql.NullString
 	err := row.Scan(
 		&w.ID, &w.OwnerType, &w.OwnerID, &w.Name,
 		&w.RootPath, &maxBytes, &w.Status, &w.IndexingEnabled,
+		&gitRemote, &gitBranch, &gitCredID, stN(&w.GitLastSync),
 		st(&w.CreatedAt), st(&w.UpdatedAt),
 	)
 	if err != nil {
@@ -39,6 +41,15 @@ func scanWorkspace(row interface{ Scan(dest ...interface{}) error }) (*models.Wo
 	if maxBytes.Valid {
 		w.MaxBytes = &maxBytes.Int64
 	}
+	if gitRemote.Valid {
+		w.GitRemoteURL = &gitRemote.String
+	}
+	if gitBranch.Valid {
+		w.GitBranch = &gitBranch.String
+	}
+	if gitCredID.Valid {
+		w.GitCredentialID = &gitCredID.String
+	}
 	return &w, nil
 }
 
@@ -107,6 +118,15 @@ func (s *WorkspaceStore) Update(ctx context.Context, id string, patch models.Wor
 	if patch.IndexingEnabled != nil {
 		b.Set("indexing_enabled", *patch.IndexingEnabled)
 	}
+	if patch.GitRemoteURL != nil {
+		b.Set("git_remote_url", *patch.GitRemoteURL)
+	}
+	if patch.GitBranch != nil {
+		b.Set("git_branch", *patch.GitBranch)
+	}
+	if patch.GitCredentialID != nil {
+		b.Set("git_credential_id", *patch.GitCredentialID)
+	}
 	if !b.HasSets() {
 		return nil
 	}
@@ -406,6 +426,13 @@ func (s *WorkspaceStore) UpdateFileIndexStatus(ctx context.Context, fileID, stat
 	return err
 }
 
+func (s *WorkspaceStore) SetGitLastSync(ctx context.Context, workspaceID string, t time.Time) error {
+	_, err := DB.ExecContext(ctx,
+		`UPDATE workspaces SET git_last_sync = ?, updated_at = datetime('now') WHERE id = ?`,
+		t.Format(timeFmt), workspaceID)
+	return err
+}
+
 // wsCosineSimilarity computes cosine similarity between two vectors.
 // Named to avoid collision with the KB package-level function.
 func wsCosineSimilarity(a, b []float64) float64 {

server/tools/git.go

@@ -0,0 +1,216 @@
+package tools
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"git.gobha.me/xcaliber/chat-switchboard/workspace"
+)
+
+// RegisterGitTools registers the 5 git-related workspace tools.
+// Only meaningful when a workspace has git_remote_url set — the completion
+// handler filters them out otherwise (via GitToolNames).
+func RegisterGitTools(gitOps *workspace.GitOps) {
+	Register(&gitStatusTool{gitOps: gitOps})
+	Register(&gitDiffTool{gitOps: gitOps})
+	Register(&gitCommitTool{gitOps: gitOps})
+	Register(&gitLogTool{gitOps: gitOps})
+	Register(&gitBranchTool{gitOps: gitOps})
+}
+
+// GitToolNames returns the names of all git tools for filtering.
+func GitToolNames() []string {
+	return []string{"git_status", "git_diff", "git_commit", "git_log", "git_branch"}
+}
+
+// ── git_status ───────────────────────────────
+
+type gitStatusTool struct{ gitOps *workspace.GitOps }
+
+func (t *gitStatusTool) Definition() ToolDef {
+	return ToolDef{
+		Name:        "git_status",
+		DisplayName: "Git Status",
+		Description: "Show git working tree status: branch name, staged/modified/untracked files, ahead/behind remote counts.",
+		Category:    "workspace",
+		Parameters:  JSONSchema(map[string]interface{}{}, nil),
+	}
+}
+
+func (t *gitStatusTool) Execute(ctx context.Context, execCtx ExecutionContext, argsJSON string) (string, error) {
+	w, err := t.gitOps.LoadWorkspace(ctx, execCtx.WorkspaceID)
+	if err != nil {
+		return "", err
+	}
+	status, err := t.gitOps.Status(ctx, w)
+	if err != nil {
+		return "", err
+	}
+	data, _ := json.MarshalIndent(status, "", "  ")
+	return string(data), nil
+}
+
+// ── git_diff ─────────────────────────────────
+
+type gitDiffTool struct{ gitOps *workspace.GitOps }
+
+func (t *gitDiffTool) Definition() ToolDef {
+	return ToolDef{
+		Name:        "git_diff",
+		DisplayName: "Git Diff",
+		Description: "Show git diff for a specific file or all uncommitted changes.",
+		Category:    "workspace",
+		Parameters: JSONSchema(map[string]interface{}{
+			"path": Prop("string", "File path to diff (empty for all changes)"),
+		}, nil),
+	}
+}
+
+func (t *gitDiffTool) Execute(ctx context.Context, execCtx ExecutionContext, argsJSON string) (string, error) {
+	var args struct {
+		Path string `json:"path"`
+	}
+	json.Unmarshal([]byte(argsJSON), &args)
+
+	w, err := t.gitOps.LoadWorkspace(ctx, execCtx.WorkspaceID)
+	if err != nil {
+		return "", err
+	}
+	diff, err := t.gitOps.Diff(ctx, w, args.Path)
+	if err != nil {
+		return "", err
+	}
+	if diff == "" {
+		return "No changes.", nil
+	}
+	if len(diff) > 50000 {
+		diff = diff[:50000] + "\n... (truncated)"
+	}
+	return diff, nil
+}
+
+// ── git_commit ───────────────────────────────
+
+type gitCommitTool struct{ gitOps *workspace.GitOps }
+
+func (t *gitCommitTool) Definition() ToolDef {
+	return ToolDef{
+		Name:        "git_commit",
+		DisplayName: "Git Commit",
+		Description: "Stage and commit files. Stages all changes if no paths specified.",
+		Category:    "workspace",
+		Parameters: JSONSchema(map[string]interface{}{
+			"message": Prop("string", "Commit message"),
+			"paths":   PropArray("Specific file paths to stage (empty = stage all)"),
+		}, []string{"message"}),
+	}
+}
+
+func (t *gitCommitTool) Execute(ctx context.Context, execCtx ExecutionContext, argsJSON string) (string, error) {
+	var args struct {
+		Message string   `json:"message"`
+		Paths   []string `json:"paths"`
+	}
+	if err := json.Unmarshal([]byte(argsJSON), &args); err != nil {
+		return "", fmt.Errorf("invalid arguments: %w", err)
+	}
+	if args.Message == "" {
+		return "", fmt.Errorf("commit message is required")
+	}
+
+	w, err := t.gitOps.LoadWorkspace(ctx, execCtx.WorkspaceID)
+	if err != nil {
+		return "", err
+	}
+	if err := t.gitOps.Commit(ctx, w, args.Message, args.Paths); err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("Committed: %s", args.Message), nil
+}
+
+// ── git_log ──────────────────────────────────
+
+type gitLogTool struct{ gitOps *workspace.GitOps }
+
+func (t *gitLogTool) Definition() ToolDef {
+	return ToolDef{
+		Name:        "git_log",
+		DisplayName: "Git Log",
+		Description: "Show recent commit history.",
+		Category:    "workspace",
+		Parameters: JSONSchema(map[string]interface{}{
+			"count": Prop("integer", "Number of commits to show (default 20, max 100)"),
+		}, nil),
+	}
+}
+
+func (t *gitLogTool) Execute(ctx context.Context, execCtx ExecutionContext, argsJSON string) (string, error) {
+	var args struct {
+		Count int `json:"count"`
+	}
+	json.Unmarshal([]byte(argsJSON), &args)
+	if args.Count <= 0 {
+		args.Count = 20
+	}
+	if args.Count > 100 {
+		args.Count = 100
+	}
+
+	w, err := t.gitOps.LoadWorkspace(ctx, execCtx.WorkspaceID)
+	if err != nil {
+		return "", err
+	}
+	entries, err := t.gitOps.Log(ctx, w, args.Count)
+	if err != nil {
+		return "", err
+	}
+	data, _ := json.MarshalIndent(entries, "", "  ")
+	return string(data), nil
+}
+
+// ── git_branch ───────────────────────────────
+
+type gitBranchTool struct{ gitOps *workspace.GitOps }
+
+func (t *gitBranchTool) Definition() ToolDef {
+	return ToolDef{
+		Name:        "git_branch",
+		DisplayName: "Git Branch",
+		Description: "List branches or switch to a different branch.",
+		Category:    "workspace",
+		Parameters: JSONSchema(map[string]interface{}{
+			"checkout": Prop("string", "Branch name to switch to (empty = list only)"),
+		}, nil),
+	}
+}
+
+func (t *gitBranchTool) Execute(ctx context.Context, execCtx ExecutionContext, argsJSON string) (string, error) {
+	var args struct {
+		Checkout string `json:"checkout"`
+	}
+	json.Unmarshal([]byte(argsJSON), &args)
+
+	w, err := t.gitOps.LoadWorkspace(ctx, execCtx.WorkspaceID)
+	if err != nil {
+		return "", err
+	}
+
+	if args.Checkout != "" {
+		if err := t.gitOps.Checkout(ctx, w, args.Checkout); err != nil {
+			return "", err
+		}
+		return fmt.Sprintf("Switched to branch: %s", args.Checkout), nil
+	}
+
+	branches, current, err := t.gitOps.BranchList(ctx, w)
+	if err != nil {
+		return "", err
+	}
+	result := map[string]interface{}{
+		"current":  current,
+		"branches": branches,
+	}
+	data, _ := json.MarshalIndent(result, "", "  ")
+	return string(data), nil
+}

server/workspace/fs_test.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
+	"time"
 
 	"git.gobha.me/xcaliber/chat-switchboard/models"
 )
@@ -275,6 +276,9 @@ func (m *mockWorkspaceStore) SimilaritySearch(ctx context.Context, workspaceID s
 func (m *mockWorkspaceStore) UpdateFileIndexStatus(ctx context.Context, fileID, status string, chunkCount int) error {
 	return nil
 }
+func (m *mockWorkspaceStore) SetGitLastSync(ctx context.Context, workspaceID string, t time.Time) error {
+	return nil
+}
 
 func TestWriteReadRoundTrip(t *testing.T) {
 	tmpDir := t.TempDir()

server/workspace/gitops.go

@@ -0,0 +1,585 @@
+package workspace
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/url"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"time"
+
+	"git.gobha.me/xcaliber/chat-switchboard/crypto"
+	"git.gobha.me/xcaliber/chat-switchboard/models"
+	"git.gobha.me/xcaliber/chat-switchboard/store"
+)
+
+// GitOps provides git operations for workspaces via exec.
+// Credentials are decrypted from the vault and injected via temporary
+// files or environment variables for the duration of each operation.
+type GitOps struct {
+	fs          *FS
+	stores      store.Stores
+	keyResolver *crypto.KeyResolver
+	indexer     *Indexer // may be nil
+}
+
+// NewGitOps creates a new git operations handler.
+func NewGitOps(fs *FS, stores store.Stores, resolver *crypto.KeyResolver, indexer *Indexer) *GitOps {
+	return &GitOps{
+		fs:          fs,
+		stores:      stores,
+		keyResolver: resolver,
+		indexer:     indexer,
+	}
+}
+
+// ── Clone ────────────────────────────────────
+
+// Clone clones a remote repository into the workspace.
+func (g *GitOps) Clone(ctx context.Context, w *models.Workspace, remoteURL, branch, credID string) error {
+	if err := validateRemoteURL(remoteURL); err != nil {
+		return err
+	}
+
+	dir := g.fs.workspacePath(w)
+
+	args := []string{"clone", "--single-branch"}
+	if branch != "" {
+		args = append(args, "--branch", branch)
+	}
+	args = append(args, remoteURL, ".")
+
+	env, cleanup, err := g.credEnv(ctx, credID, remoteURL)
+	if err != nil {
+		return fmt.Errorf("git clone: credential setup: %w", err)
+	}
+	defer cleanup()
+
+	if _, err := g.run(ctx, dir, env, args...); err != nil {
+		return fmt.Errorf("git clone: %w", err)
+	}
+
+	// Update workspace with git metadata
+	now := time.Now().UTC()
+	patch := models.WorkspacePatch{
+		GitRemoteURL: &remoteURL,
+		GitCredentialID: &credID,
+	}
+	if branch != "" {
+		patch.GitBranch = &branch
+	} else {
+		// Detect default branch
+		if out, err := g.run(ctx, dir, nil, "rev-parse", "--abbrev-ref", "HEAD"); err == nil {
+			b := strings.TrimSpace(out)
+			patch.GitBranch = &b
+		}
+	}
+	if err := g.stores.Workspaces.Update(ctx, w.ID, patch); err != nil {
+		return fmt.Errorf("git clone: update workspace: %w", err)
+	}
+	g.updateSyncTime(ctx, w.ID, now)
+
+	// Post-operation: reconcile + re-index
+	g.postOpHook(ctx, w)
+
+	return nil
+}
+
+// ── Pull ─────────────────────────────────────
+
+func (g *GitOps) Pull(ctx context.Context, w *models.Workspace) error {
+	dir := g.fs.workspacePath(w)
+	env, cleanup, err := g.credEnvFromWorkspace(ctx, w)
+	if err != nil {
+		return fmt.Errorf("git pull: %w", err)
+	}
+	defer cleanup()
+
+	if _, err := g.run(ctx, dir, env, "pull", "--ff-only"); err != nil {
+		return fmt.Errorf("git pull: %w", err)
+	}
+
+	g.updateSyncTime(ctx, w.ID, time.Now().UTC())
+	g.postOpHook(ctx, w)
+	return nil
+}
+
+// ── Push ─────────────────────────────────────
+
+func (g *GitOps) Push(ctx context.Context, w *models.Workspace) error {
+	dir := g.fs.workspacePath(w)
+	env, cleanup, err := g.credEnvFromWorkspace(ctx, w)
+	if err != nil {
+		return fmt.Errorf("git push: %w", err)
+	}
+	defer cleanup()
+
+	if _, err := g.run(ctx, dir, env, "push"); err != nil {
+		return fmt.Errorf("git push: %w", err)
+	}
+
+	g.updateSyncTime(ctx, w.ID, time.Now().UTC())
+	return nil
+}
+
+// ── Status ───────────────────────────────────
+
+func (g *GitOps) Status(ctx context.Context, w *models.Workspace) (*models.GitStatus, error) {
+	dir := g.fs.workspacePath(w)
+
+	// Branch name
+	branchOut, err := g.run(ctx, dir, nil, "rev-parse", "--abbrev-ref", "HEAD")
+	if err != nil {
+		return nil, fmt.Errorf("git status: %w", err)
+	}
+
+	// Porcelain status
+	out, err := g.run(ctx, dir, nil, "status", "--porcelain=v1", "-b")
+	if err != nil {
+		return nil, fmt.Errorf("git status: %w", err)
+	}
+
+	status := &models.GitStatus{
+		Branch: strings.TrimSpace(branchOut),
+	}
+
+	lines := strings.Split(strings.TrimSpace(out), "\n")
+	for _, line := range lines {
+		if len(line) == 0 {
+			continue
+		}
+		// Branch line: ## main...origin/main [ahead 1, behind 2]
+		if strings.HasPrefix(line, "## ") {
+			if idx := strings.Index(line, "["); idx > 0 {
+				bracket := line[idx:]
+				if n := parseAheadBehind(bracket, "ahead"); n > 0 {
+					status.Ahead = n
+				}
+				if n := parseAheadBehind(bracket, "behind"); n > 0 {
+					status.Behind = n
+				}
+			}
+			continue
+		}
+		if len(line) < 4 {
+			continue
+		}
+		x := line[0]   // index status
+		y := line[1]   // working tree status
+		path := strings.TrimSpace(line[3:])
+
+		if x == '?' && y == '?' {
+			status.Untracked = append(status.Untracked, path)
+		} else if x != ' ' && x != '?' {
+			status.Staged = append(status.Staged, models.GitFileStatus{Path: path, Status: string(x)})
+		}
+		if y != ' ' && y != '?' {
+			status.Modified = append(status.Modified, models.GitFileStatus{Path: path, Status: string(y)})
+		}
+	}
+
+	status.Clean = len(status.Staged) == 0 && len(status.Modified) == 0 && len(status.Untracked) == 0
+	return status, nil
+}
+
+// ── Diff ─────────────────────────────────────
+
+func (g *GitOps) Diff(ctx context.Context, w *models.Workspace, path string) (string, error) {
+	dir := g.fs.workspacePath(w)
+	args := []string{"diff"}
+	if path != "" {
+		args = append(args, "--", path)
+	}
+	out, err := g.run(ctx, dir, nil, args...)
+	if err != nil {
+		return "", fmt.Errorf("git diff: %w", err)
+	}
+	return out, nil
+}
+
+// ── Commit ───────────────────────────────────
+
+func (g *GitOps) Commit(ctx context.Context, w *models.Workspace, message string, paths []string) error {
+	dir := g.fs.workspacePath(w)
+
+	// Stage files
+	if len(paths) == 0 {
+		if _, err := g.run(ctx, dir, nil, "add", "-A"); err != nil {
+			return fmt.Errorf("git add: %w", err)
+		}
+	} else {
+		args := append([]string{"add", "--"}, paths...)
+		if _, err := g.run(ctx, dir, nil, args...); err != nil {
+			return fmt.Errorf("git add: %w", err)
+		}
+	}
+
+	// Commit
+	if _, err := g.run(ctx, dir, nil, "commit", "-m", message); err != nil {
+		return fmt.Errorf("git commit: %w", err)
+	}
+
+	return nil
+}
+
+// ── Log ──────────────────────────────────────
+
+func (g *GitOps) Log(ctx context.Context, w *models.Workspace, n int) ([]models.GitLogEntry, error) {
+	dir := g.fs.workspacePath(w)
+	if n <= 0 {
+		n = 20
+	}
+
+	// JSON-like format for reliable parsing
+	format := `{"hash":"%H","short_hash":"%h","author":"%an","date":"%aI","message":"%s"}`
+	out, err := g.run(ctx, dir, nil, "log", fmt.Sprintf("-n%d", n), fmt.Sprintf("--format=%s", format))
+	if err != nil {
+		return nil, fmt.Errorf("git log: %w", err)
+	}
+
+	var entries []models.GitLogEntry
+	scanner := bufio.NewScanner(strings.NewReader(strings.TrimSpace(out)))
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "" {
+			continue
+		}
+		var entry models.GitLogEntry
+		if err := json.Unmarshal([]byte(line), &entry); err != nil {
+			continue // skip malformed
+		}
+		entries = append(entries, entry)
+	}
+	return entries, nil
+}
+
+// ── Branch ───────────────────────────────────
+
+func (g *GitOps) BranchList(ctx context.Context, w *models.Workspace) ([]string, string, error) {
+	dir := g.fs.workspacePath(w)
+	out, err := g.run(ctx, dir, nil, "branch", "-a", "--format=%(refname:short)%(if)%(HEAD)%(then) *%(end)")
+	if err != nil {
+		return nil, "", fmt.Errorf("git branch: %w", err)
+	}
+
+	var branches []string
+	var current string
+	for _, line := range strings.Split(strings.TrimSpace(out), "\n") {
+		if line == "" {
+			continue
+		}
+		if strings.HasSuffix(line, " *") {
+			name := strings.TrimSuffix(line, " *")
+			current = name
+			branches = append(branches, name)
+		} else {
+			branches = append(branches, strings.TrimSpace(line))
+		}
+	}
+	return branches, current, nil
+}
+
+// Checkout switches to a branch.
+func (g *GitOps) Checkout(ctx context.Context, w *models.Workspace, branch string) error {
+	dir := g.fs.workspacePath(w)
+	if _, err := g.run(ctx, dir, nil, "checkout", branch); err != nil {
+		return fmt.Errorf("git checkout: %w", err)
+	}
+
+	// Update workspace branch
+	patch := models.WorkspacePatch{GitBranch: &branch}
+	if err := g.stores.Workspaces.Update(ctx, w.ID, patch); err != nil {
+		log.Printf("git: failed to update workspace branch: %v", err)
+	}
+
+	g.postOpHook(ctx, w)
+	return nil
+}
+
+// ── Internals ────────────────────────────────
+
+// run executes a git command in the given directory with optional env vars.
+func (g *GitOps) run(ctx context.Context, dir string, env []string, args ...string) (string, error) {
+	cmd := exec.CommandContext(ctx, "git", args...)
+	cmd.Dir = dir
+
+	// Base environment + any credential env vars
+	cmd.Env = append(os.Environ(), "GIT_TERMINAL_PROMPT=0")
+	if len(env) > 0 {
+		cmd.Env = append(cmd.Env, env...)
+	}
+
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+
+	err := cmd.Run()
+	if err != nil {
+		// Include stderr for diagnostics but sanitize credentials
+		errMsg := sanitizeOutput(stderr.String())
+		return "", fmt.Errorf("%s: %s", err, errMsg)
+	}
+	return stdout.String(), nil
+}
+
+// credEnv sets up credential environment for a git operation.
+// Returns env vars, a cleanup function, and any error.
+func (g *GitOps) credEnv(ctx context.Context, credID, remoteURL string) ([]string, func(), error) {
+	noop := func() {}
+	if credID == "" {
+		return nil, noop, nil
+	}
+
+	cred, err := g.stores.GitCredentials.GetByID(ctx, credID)
+	if err != nil {
+		return nil, noop, fmt.Errorf("credential not found: %w", err)
+	}
+
+	// Decrypt credential data
+	plaintext, err := g.keyResolver.Decrypt(cred.EncryptedData, cred.Nonce, "global", cred.UserID)
+	if err != nil {
+		return nil, noop, fmt.Errorf("credential decryption failed: %w", err)
+	}
+
+	var data map[string]string
+	if err := json.Unmarshal([]byte(plaintext), &data); err != nil {
+		return nil, noop, fmt.Errorf("credential data invalid: %w", err)
+	}
+
+	switch cred.AuthType {
+	case "https_pat":
+		return g.setupHTTPSPAT(data, remoteURL)
+	case "https_basic":
+		return g.setupHTTPSBasic(data, remoteURL)
+	case "ssh_key":
+		return g.setupSSHKey(data)
+	default:
+		return nil, noop, fmt.Errorf("unsupported auth type: %s", cred.AuthType)
+	}
+}
+
+func (g *GitOps) credEnvFromWorkspace(ctx context.Context, w *models.Workspace) ([]string, func(), error) {
+	credID := ""
+	if w.GitCredentialID != nil {
+		credID = *w.GitCredentialID
+	}
+	remoteURL := ""
+	if w.GitRemoteURL != nil {
+		remoteURL = *w.GitRemoteURL
+	}
+	return g.credEnv(ctx, credID, remoteURL)
+}
+
+// setupHTTPSPAT creates a GIT_ASKPASS script that echoes the PAT.
+func (g *GitOps) setupHTTPSPAT(data map[string]string, remoteURL string) ([]string, func(), error) {
+	token := data["token"]
+	if token == "" {
+		return nil, func() {}, fmt.Errorf("PAT token is empty")
+	}
+
+	// Create temp askpass script
+	f, err := os.CreateTemp("", "git-askpass-*.sh")
+	if err != nil {
+		return nil, func() {}, err
+	}
+
+	script := fmt.Sprintf("#!/bin/sh\necho '%s'\n", strings.ReplaceAll(token, "'", "'\\''"))
+	f.WriteString(script)
+	f.Close()
+	os.Chmod(f.Name(), 0700)
+
+	cleanup := func() {
+		os.Remove(f.Name())
+	}
+
+	env := []string{
+		"GIT_ASKPASS=" + f.Name(),
+	}
+	return env, cleanup, nil
+}
+
+// setupHTTPSBasic creates a temporary .git-credentials file.
+func (g *GitOps) setupHTTPSBasic(data map[string]string, remoteURL string) ([]string, func(), error) {
+	username := data["username"]
+	password := data["password"]
+	if username == "" || password == "" {
+		return nil, func() {}, fmt.Errorf("basic auth credentials incomplete")
+	}
+
+	// Parse remote URL to extract host
+	parsed, err := url.Parse(remoteURL)
+	if err != nil {
+		return nil, func() {}, fmt.Errorf("invalid remote URL: %w", err)
+	}
+
+	credURL := fmt.Sprintf("%s://%s:%s@%s", parsed.Scheme,
+		url.PathEscape(username), url.PathEscape(password), parsed.Host)
+
+	f, err := os.CreateTemp("", "git-creds-*.txt")
+	if err != nil {
+		return nil, func() {}, err
+	}
+	f.WriteString(credURL + "\n")
+	f.Close()
+	os.Chmod(f.Name(), 0600)
+
+	cleanup := func() {
+		os.Remove(f.Name())
+	}
+
+	env := []string{
+		fmt.Sprintf("GIT_CONFIG_COUNT=2"),
+		fmt.Sprintf("GIT_CONFIG_KEY_0=credential.helper"),
+		fmt.Sprintf("GIT_CONFIG_VALUE_0=store --file=%s", f.Name()),
+		fmt.Sprintf("GIT_CONFIG_KEY_1=credential.helper"),
+		fmt.Sprintf("GIT_CONFIG_VALUE_1="),
+	}
+	return env, cleanup, nil
+}
+
+// setupSSHKey creates a temporary SSH key file and GIT_SSH_COMMAND.
+func (g *GitOps) setupSSHKey(data map[string]string) ([]string, func(), error) {
+	privateKey := data["private_key"]
+	if privateKey == "" {
+		return nil, func() {}, fmt.Errorf("SSH private key is empty")
+	}
+
+	f, err := os.CreateTemp("", "git-ssh-key-*")
+	if err != nil {
+		return nil, func() {}, err
+	}
+	f.WriteString(privateKey)
+	if !strings.HasSuffix(privateKey, "\n") {
+		f.WriteString("\n")
+	}
+	f.Close()
+	os.Chmod(f.Name(), 0600)
+
+	cleanup := func() {
+		os.Remove(f.Name())
+	}
+
+	sshCmd := fmt.Sprintf("ssh -i %s -o StrictHostKeyChecking=accept-new -o IdentitiesOnly=yes", f.Name())
+
+	env := []string{
+		"GIT_SSH_COMMAND=" + sshCmd,
+	}
+	return env, cleanup, nil
+}
+
+// validateRemoteURL rejects file:// and local path URLs.
+func validateRemoteURL(u string) error {
+	if u == "" {
+		return fmt.Errorf("remote URL is required")
+	}
+	lower := strings.ToLower(u)
+	if strings.HasPrefix(lower, "file://") || strings.HasPrefix(lower, "/") || strings.HasPrefix(lower, ".") {
+		return fmt.Errorf("local filesystem URLs are not allowed")
+	}
+	return nil
+}
+
+// sanitizeOutput removes potential credential leaks from error messages.
+func sanitizeOutput(s string) string {
+	// Strip lines containing tokens/passwords
+	var lines []string
+	for _, line := range strings.Split(s, "\n") {
+		lower := strings.ToLower(line)
+		if strings.Contains(lower, "password") || strings.Contains(lower, "token") ||
+			strings.Contains(lower, "credential") {
+			continue
+		}
+		lines = append(lines, line)
+	}
+	result := strings.Join(lines, "\n")
+	if len(result) > 500 {
+		result = result[:500] + "..."
+	}
+	return strings.TrimSpace(result)
+}
+
+func parseAheadBehind(bracket, key string) int {
+	idx := strings.Index(bracket, key)
+	if idx < 0 {
+		return 0
+	}
+	rest := bracket[idx+len(key):]
+	rest = strings.TrimLeft(rest, " ")
+	num := ""
+	for _, c := range rest {
+		if c >= '0' && c <= '9' {
+			num += string(c)
+		} else {
+			break
+		}
+	}
+	n, _ := strconv.Atoi(num)
+	return n
+}
+
+// updateSyncTime sets git_last_sync on the workspace.
+func (g *GitOps) updateSyncTime(ctx context.Context, wsID string, t time.Time) {
+	if err := g.stores.Workspaces.SetGitLastSync(ctx, wsID, t); err != nil {
+		log.Printf("git: failed to update sync time for %s: %v", wsID, err)
+	}
+}
+
+// postOpHook triggers workspace reconcile and re-indexing after git operations
+// that change the working tree (clone, pull, checkout).
+func (g *GitOps) postOpHook(ctx context.Context, w *models.Workspace) {
+	// Reconcile: sync filesystem → database file index
+	added, removed, updated, err := g.fs.Reconcile(ctx, w)
+	if err != nil {
+		log.Printf("git: post-op reconcile failed for %s: %v", w.ID, err)
+		return
+	}
+	log.Printf("git: post-op reconcile %s: +%d -%d ~%d", w.ID, added, removed, updated)
+
+	// Re-index if indexer is configured and there are changes
+	if g.indexer != nil && g.indexer.IsEnabled(ctx) && (added+updated) > 0 {
+		files, err := g.stores.Workspaces.ListFiles(ctx, w.ID, "", true)
+		if err != nil {
+			log.Printf("git: post-op index list failed: %v", err)
+			return
+		}
+
+		// Resolve userID/teamID from workspace owner
+		var userID string
+		var teamID *string
+		switch w.OwnerType {
+		case "user":
+			userID = w.OwnerID
+		case "team":
+			teamID = &w.OwnerID
+		default:
+			userID = w.OwnerID
+		}
+
+		g.indexer.IndexBatch(w, files, userID, teamID)
+	}
+}
+
+// workspacePath returns the filesystem path for git operations on a workspace.
+// This is the files directory where the working tree lives.
+func (fs *FS) workspacePath(w *models.Workspace) string {
+	return fs.filesDir(w)
+}
+
+// LoadWorkspace fetches a workspace by ID and validates it has a git remote.
+// Used by git tools to resolve workspace + check git configuration.
+func (g *GitOps) LoadWorkspace(ctx context.Context, workspaceID string) (*models.Workspace, error) {
+	w, err := g.stores.Workspaces.GetByID(ctx, workspaceID)
+	if err != nil {
+		return nil, fmt.Errorf("workspace not found: %w", err)
+	}
+	if w.GitRemoteURL == nil || *w.GitRemoteURL == "" {
+		return nil, fmt.Errorf("workspace has no git remote configured")
+	}
+	return w, nil
+}

src/css/styles.css

@@ -1750,6 +1750,12 @@ select option { background: var(--bg-surface); color: var(--text); }
 
 /* ── Mode Selector (v0.21.3) ───────────── */
 
+/* Surface region wrappers must participate in parent flex layouts */
+[data-surface-region="sidebar-content"] {
+    flex: 1; min-height: 0;
+    display: flex; flex-direction: column;
+}
+
 .mode-selector {
     display: flex; gap: 2px; padding: 6px 8px;
     border-bottom: 1px solid var(--border);