Changeset 0.22.4 (#146)

2026-03-02 22:16:08 +00:00
parent 9940fb5831
commit 3953dcf364
25 changed files with 2254 additions and 145 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,40 @@

 All notable changes to Chat Switchboard.

+## [0.22.4] — 2026-03-02
+
+### Added
+- **Rate limit tracking.** Provider health windows now track HTTP 429 / rate limit events separately from general errors. New `rate_limit_count` column on `provider_health` table. `RecordRateLimit()` method on health accumulator. Completion handler and stream loop classify `HTTP 429` / `rate limit` / `Too Many Requests` errors automatically.
+- **Auto-disable policy.** Providers that report "down" status for N consecutive hourly windows are automatically deactivated. Configurable via `PROVIDER_AUTO_DISABLE_THRESHOLD` env var (default: 3, set to 0 to disable). `AutoDisabler` interface on health store, `checkAutoDisable()` runs on each flush cycle.
+- **Tool health tracking.** Built-in tools (web_search, url_fetch, etc.) now record success/error/latency to `tool_health` table via the health accumulator. `RecordToolSuccess()` / `RecordToolError()` methods. Both tool execution sites in stream loop instrumented. `ToolHealthWindow` and `ToolHealthSummary` models.
+- **Search provider health tracking.** web_search and url_fetch tool calls are now included in the tool health pipeline with per-invocation latency and error recording.
+- **Project-specific file uploads.** `POST /api/v1/projects/:id/files` (multipart upload) and `GET /api/v1/projects/:id/files` (list). `project_id` column on `attachments` table. Files are stored under `projects/{id}/` prefix. Project access verified via ownership or team membership. Files queued for text extraction if enabled.
+- **Workspace settings UI.** Git configuration section in project settings panel: remote URL, branch, credential selector. Appears when a workspace is bound. Saves via `PATCH /api/v1/workspaces/:id`. `updateWorkspace()` and `listGitCredentials()` API client methods.
+- **PDF/DOCX export via pandoc.** New `POST /api/v1/export` endpoint converts markdown content to PDF or DOCX using pandoc. Editor export dropdown now includes "Export as PDF" and "Export as DOCX" options. Graceful error handling when pandoc is unavailable.
+- **Project files UI.** File list and upload button in project settings panel. Shows file names and sizes. Multi-file upload support.
+- **API client methods.** `projectUploadFile`, `projectListFiles`, `exportDocument`, `updateWorkspace`, `listGitCredentials`.
+
+### Changed
+- `health/accumulator.go`: Added `rateLimitCount` to bucket, `RecordRateLimit()`, `RecordToolSuccess()`, `RecordToolError()`, `flushTools()`, `checkAutoDisable()`, `SetAutoDisable()`, `AutoDisabler` interface, `toolBucket` struct. `Store` interface extended with `UpsertToolWindow()`, `ListAllToolCurrent()`.
+- `handlers/completion.go`: `HealthRecorder` interface extended with `RecordRateLimit()`, `RecordToolSuccess()`, `RecordToolError()`. `recordHealth()` classifies HTTP 429 errors.
+- `handlers/stream_loop.go`: Both tool execution sites now record tool health. `recordHealthFn()` classifies rate limit errors.
+- `models/models.go`: `RateLimitCount` field on `ProviderHealthWindow`. `ToolHealthWindow`, `ToolHealthSummary` types. `ErrorCount`, `RateLimitCount`, `TimeoutCount` fields on `ProviderHealthSummary`. `ProjectID` field on `Attachment`.
+- `store/postgres/health.go`: All queries updated for `rate_limit_count`. `UpsertToolWindow()`, `ListAllToolCurrent()`, `DeactivateProvider()` methods.
+- `store/sqlite/health.go`: Full rewrite with rate_limit_count, tool health, and auto-disable support.
+- `store/postgres/attachment.go`: `project_id` in cols, scan, create, and new `GetByProject()`.
+- `store/sqlite/attachment.go`: Same project_id additions.
+- `store/interfaces.go`: `GetByProject()` on `AttachmentStore`.
+- `config/config.go`: `ProviderAutoDisableThreshold` field + env var loading.
+- `main.go`: SQLite health store branching, auto-disable wiring, export handler route, project file routes.
+- `handlers/health_admin.go`: Health summary includes error_count, rate_limit_count, timeout_count.
+- `src/js/ui-admin.js`: Health dashboard cards show "Rate Limits" count with warning color.
+- `src/js/projects-ui.js`: Git settings section, project files section, file upload handler.
+- `src/js/editor-mode.js`: PDF and DOCX export menu items and handler.
+- `src/js/api.js`: 5 new API client methods.
+
+### Database
+- Migration 015 (Postgres) / 014 (SQLite): `rate_limit_count` column on `provider_health`, `tool_health` table, `project_id` column on `attachments`.
+
 ## [0.22.3] — 2026-03-02

 ### Added
--- a/2
+++ b/2
@@ -1 +1 @@
-0.22.3
+0.22.4
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -151,14 +151,14 @@ server/
 ├── crypto/                    # AES-256-GCM API key encryption
 ├── events/                    # EventBus + WebSocket hub
 ├── extraction/                # Document text extraction pipeline
-├── health/                    # Provider health tracking (v0.22.0)
+├── health/                    # Provider health tracking (v0.22.0), tool health + auto-disable (v0.22.4)
 ├── routing/                   # Policy-based request routing (v0.22.2)
 │   ├── types.go               # Policy, Candidate, Context, Decision types
 │   ├── evaluator.go           # Policy evaluation engine (4 policy types)
 │   ├── evaluator_test.go      # 12 tests
 │   ├── fallback.go            # RunWithFallback candidate dispatcher
 │   └── convert.go             # DB model → routing type conversion
-│   ├── accumulator.go         # In-memory counters, 60s flush to DB, status derivation
+│   ├── accumulator.go         # In-memory counters, 60s flush, rate limits, tool health, auto-disable
 │   └── accumulator_test.go    # Concurrent recording, flush isolation, threshold tests
 ├── memory/                    # Long-term memory extraction + scanning
 │   ├── extractor.go           # Conversation analysis → fact extraction
@@ -178,6 +178,7 @@ server/
 │   ├── stream_loop.go         # Shared streaming + tool execution loop
 │   ├── capabilities.go        # ModelHandler: model list + health enrichment + ResolveModelCaps (v0.22.3)
 │   ├── health_admin.go        # Provider health + capability override admin endpoints
+│   ├── export.go              # Markdown → PDF/DOCX conversion via pandoc (v0.22.4)
 │   ├── routing_admin.go       # Routing policy CRUD + dry-run test (v0.22.2)
 │   ├── presets.go             # Persona CRUD (all scopes)
 │   ├── apiconfigs.go          # User provider config CRUD (BYOK)
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
--- a/server/config/config.go
+++ b/server/config/config.go
@@ -62,6 +62,11 @@ type Config struct {
 	// WORKSPACE_INDEX_CONCURRENCY: max concurrent indexing goroutines (default 2).
 	WorkspaceIndexingEnabled bool
 	WorkspaceIndexConcurrency int
+
+	// Provider auto-disable (v0.22.4)
+	// PROVIDER_AUTO_DISABLE_THRESHOLD: consecutive "down" hourly windows before a
+	// provider is automatically deactivated. Default 3. Set to 0 to disable.
+	ProviderAutoDisableThreshold int
 }

 // Load reads configuration from environment variables.
@@ -98,6 +103,8 @@ func Load() *Config {

 		WorkspaceIndexingEnabled:  getEnvBool("WORKSPACE_INDEXING_ENABLED", true),
 		WorkspaceIndexConcurrency: getEnvInt("WORKSPACE_INDEX_CONCURRENCY", 2),
+
+		ProviderAutoDisableThreshold: getEnvInt("PROVIDER_AUTO_DISABLE_THRESHOLD", 3),
 	}
 }

--- a/server/database/migrations/015_v0224_health_enhance.sql
+++ b/server/database/migrations/015_v0224_health_enhance.sql
@@ -0,0 +1,33 @@
+-- v0.22.4: Rate limit tracking, tool health, project files.
+
+-- ── Rate limit column on provider_health ────
+ALTER TABLE provider_health ADD COLUMN IF NOT EXISTS rate_limit_count INT NOT NULL DEFAULT 0;
+
+-- ── Tool Health ─────────────────────────────
+-- Lightweight health tracking for built-in tools (web_search, url_fetch, etc.).
+-- One row per tool per hourly window, similar to provider_health.
+CREATE TABLE IF NOT EXISTS tool_health (
+    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    tool_name       TEXT NOT NULL,                    -- web_search, url_fetch, etc.
+    window_start    TIMESTAMPTZ NOT NULL,             -- hourly bucket floor
+    request_count   INT NOT NULL DEFAULT 0,
+    error_count     INT NOT NULL DEFAULT 0,
+    total_latency_ms BIGINT NOT NULL DEFAULT 0,
+    max_latency_ms  INT NOT NULL DEFAULT 0,
+    last_error      TEXT,
+    last_error_at   TIMESTAMPTZ,
+    updated_at      TIMESTAMPTZ NOT NULL DEFAULT now(),
+
+    UNIQUE (tool_name, window_start)
+);
+
+CREATE INDEX IF NOT EXISTS idx_tool_health_window
+    ON tool_health (tool_name, window_start DESC);
+
+-- ── Project Files ───────────────────────────
+-- Extends attachments to support project-scoped uploads.
+-- When project_id is set, the file belongs to the project (not a message).
+ALTER TABLE attachments ADD COLUMN IF NOT EXISTS project_id UUID REFERENCES projects(id) ON DELETE CASCADE;
+
+CREATE INDEX IF NOT EXISTS idx_attachments_project
+    ON attachments (project_id) WHERE project_id IS NOT NULL;
--- a/server/database/migrations/sqlite/014_v0224_health_enhance.sql
+++ b/server/database/migrations/sqlite/014_v0224_health_enhance.sql
@@ -0,0 +1,22 @@
+-- v0.22.4: Rate limit tracking, tool health, project files (SQLite).
+
+-- Rate limit column (SQLite requires full rebuild or default — use default).
+ALTER TABLE provider_health ADD COLUMN rate_limit_count INTEGER NOT NULL DEFAULT 0;
+
+-- Tool Health
+CREATE TABLE IF NOT EXISTS tool_health (
+    id              TEXT PRIMARY KEY,
+    tool_name       TEXT NOT NULL,
+    window_start    TEXT NOT NULL,
+    request_count   INTEGER NOT NULL DEFAULT 0,
+    error_count     INTEGER NOT NULL DEFAULT 0,
+    total_latency_ms INTEGER NOT NULL DEFAULT 0,
+    max_latency_ms  INTEGER NOT NULL DEFAULT 0,
+    last_error      TEXT,
+    last_error_at   TEXT,
+    updated_at      TEXT NOT NULL DEFAULT (datetime('now')),
+    UNIQUE (tool_name, window_start)
+);
+
+-- Project Files
+ALTER TABLE attachments ADD COLUMN project_id TEXT REFERENCES projects(id) ON DELETE CASCADE;
--- a/server/handlers/attachments.go
+++ b/server/handlers/attachments.go
@@ -457,6 +457,121 @@ func sanitizeFilename(name string) string {
 	return name
 }

+// ── Project Files (v0.22.4) ────────────────
+
+// UploadToProject handles project-scoped file uploads.
+// POST /api/v1/projects/:id/files
+func (h *AttachmentHandler) UploadToProject(c *gin.Context) {
+	if h.objStore == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{"error": "file storage not configured"})
+		return
+	}
+
+	userID := getUserID(c)
+	projectID := c.Param("id")
+
+	// Verify project access (user owns or is team member)
+	var exists bool
+	err := database.DB.QueryRowContext(c.Request.Context(), database.Q(`
+		SELECT EXISTS(
+			SELECT 1 FROM projects
+			WHERE id = $1 AND (owner_id = $2 OR team_id IN (
+				SELECT team_id FROM team_members WHERE user_id = $2 AND is_active = true
+			))
+		)
+	`), projectID, userID).Scan(&exists)
+	if err != nil || !exists {
+		c.JSON(http.StatusForbidden, gin.H{"error": "project not found or access denied"})
+		return
+	}
+
+	file, header, err := c.Request.FormFile("file")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no file uploaded"})
+		return
+	}
+	defer file.Close()
+
+	if header.Size > int64(defaultMaxFileSize) {
+		c.JSON(http.StatusRequestEntityTooLarge, gin.H{"error": "file exceeds size limit"})
+		return
+	}
+
+	// Detect content type
+	buf := make([]byte, 512)
+	n, _ := file.Read(buf)
+	contentType := http.DetectContentType(buf[:n])
+	file.Seek(0, io.SeekStart)
+
+	ext := strings.ToLower(filepath.Ext(header.Filename))
+	if better, ok := extToMIME[ext]; ok && contentType == "application/octet-stream" {
+		contentType = better
+	}
+
+	// Store file
+	storageKey := fmt.Sprintf("projects/%s/%s/%s", projectID, store.NewID()[:8], sanitizeFilename(header.Filename))
+	if err := h.objStore.Put(c.Request.Context(), storageKey, file, header.Size, contentType); err != nil {
+		log.Printf("error: project file upload: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to store file"})
+		return
+	}
+
+	att := models.Attachment{
+		ChannelID:   "", // no channel association
+		UserID:      userID,
+		ProjectID:   &projectID,
+		Filename:    header.Filename,
+		ContentType: contentType,
+		SizeBytes:   header.Size,
+		StorageKey:  storageKey,
+	}
+
+	if err := h.stores.Attachments.Create(c.Request.Context(), &att); err != nil {
+		log.Printf("error: project file create: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to save file metadata"})
+		return
+	}
+
+	if h.extQueue != nil {
+		if err := h.extQueue.Enqueue(att.ID, att.StorageKey, contentType, att.Filename); err != nil {
+			log.Printf("warning: project file extraction enqueue failed: %v", err)
+		}
+	}
+
+	c.JSON(http.StatusCreated, att)
+}
+
+// ListByProject returns all files uploaded to a project.
+// GET /api/v1/projects/:id/files
+func (h *AttachmentHandler) ListByProject(c *gin.Context) {
+	userID := getUserID(c)
+	projectID := c.Param("id")
+
+	// Verify project access
+	var exists bool
+	err := database.DB.QueryRowContext(c.Request.Context(), database.Q(`
+		SELECT EXISTS(
+			SELECT 1 FROM projects
+			WHERE id = $1 AND (owner_id = $2 OR team_id IN (
+				SELECT team_id FROM team_members WHERE user_id = $2 AND is_active = true
+			))
+		)
+	`), projectID, userID).Scan(&exists)
+	if err != nil || !exists {
+		c.JSON(http.StatusForbidden, gin.H{"error": "project not found or access denied"})
+		return
+	}
+
+	files, err := h.stores.Attachments.GetByProject(c.Request.Context(), projectID)
+	if err != nil {
+		log.Printf("error: list project files: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to list files"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"files": files, "count": len(files)})
+}
+
 // extToMIME maps file extensions to MIME types for cases where
 // http.DetectContentType returns application/octet-stream.
 var extToMIME = map[string]string{
--- a/server/handlers/completion.go
+++ b/server/handlers/completion.go
@@ -64,6 +64,9 @@ type HealthRecorder interface {
 	RecordSuccess(providerConfigID string, latencyMs int)
 	RecordError(providerConfigID string, latencyMs int, errMsg string)
 	RecordTimeout(providerConfigID string, latencyMs int, errMsg string)
+	RecordRateLimit(providerConfigID string, latencyMs int, errMsg string) // v0.22.4
+	RecordToolSuccess(toolName string, latencyMs int)                      // v0.22.4
+	RecordToolError(toolName string, latencyMs int, errMsg string)         // v0.22.4
 }

 // HealthStatusQuerier retrieves current provider health for routing decisions.
@@ -1365,6 +1368,8 @@ func (h *CompletionHandler) recordHealth(configID string, start time.Time, err e
 		errMsg := err.Error()
 		if strings.Contains(errMsg, "context deadline exceeded") || strings.Contains(errMsg, "timeout") {
 			h.health.RecordTimeout(configID, latencyMs, errMsg)
+		} else if strings.Contains(errMsg, "HTTP 429") || strings.Contains(errMsg, "rate limit") || strings.Contains(errMsg, "Too Many Requests") {
+			h.health.RecordRateLimit(configID, latencyMs, errMsg)
 		} else {
 			h.health.RecordError(configID, latencyMs, errMsg)
 		}
--- a/server/handlers/export.go
+++ b/server/handlers/export.go
@@ -0,0 +1,110 @@
+package handlers
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ExportHandler converts markdown content to PDF or DOCX via pandoc.
+type ExportHandler struct{}
+
+func NewExportHandler() *ExportHandler { return &ExportHandler{} }
+
+type exportRequest struct {
+	Content  string `json:"content" binding:"required"`
+	Format   string `json:"format" binding:"required"` // "pdf" or "docx"
+	Filename string `json:"filename"`                  // optional base name
+}
+
+// Convert handles POST /api/v1/export.
+// Converts markdown content to the requested format and returns the file.
+func (h *ExportHandler) Convert(c *gin.Context) {
+	var req exportRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// Validate format
+	switch req.Format {
+	case "pdf", "docx":
+		// ok
+	default:
+		c.JSON(http.StatusBadRequest, gin.H{"error": "format must be pdf or docx"})
+		return
+	}
+
+	// Check pandoc availability
+	if _, err := exec.LookPath("pandoc"); err != nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{"error": "pandoc is not installed on the server"})
+		return
+	}
+
+	// Create temp dir for conversion
+	tmpDir, err := os.MkdirTemp("", "export-*")
+	if err != nil {
+		log.Printf("export: failed to create temp dir: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "export failed"})
+		return
+	}
+	defer os.RemoveAll(tmpDir)
+
+	// Write markdown to temp file
+	inputPath := filepath.Join(tmpDir, "input.md")
+	if err := os.WriteFile(inputPath, []byte(req.Content), 0644); err != nil {
+		log.Printf("export: failed to write input: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "export failed"})
+		return
+	}
+
+	// Determine output filename
+	baseName := "document"
+	if req.Filename != "" {
+		baseName = strings.TrimSuffix(req.Filename, filepath.Ext(req.Filename))
+	}
+	outputFile := baseName + "." + req.Format
+	outputPath := filepath.Join(tmpDir, outputFile)
+
+	// Build pandoc command
+	args := []string{inputPath, "-o", outputPath, "--standalone"}
+	if req.Format == "pdf" {
+		// Try to use a lightweight PDF engine
+		for _, engine := range []string{"weasyprint", "wkhtmltopdf", "pdflatex"} {
+			if _, err := exec.LookPath(engine); err == nil {
+				args = append(args, "--pdf-engine="+engine)
+				break
+			}
+		}
+	}
+
+	cmd := exec.CommandContext(c.Request.Context(), "pandoc", args...)
+	cmd.Dir = tmpDir
+	if output, err := cmd.CombinedOutput(); err != nil {
+		log.Printf("export: pandoc failed: %v\n%s", err, string(output))
+		c.JSON(http.StatusInternalServerError, gin.H{
+			"error":   "pandoc conversion failed",
+			"details": string(output),
+		})
+		return
+	}
+
+	// Serve the file
+	contentType := "application/octet-stream"
+	switch req.Format {
+	case "pdf":
+		contentType = "application/pdf"
+	case "docx":
+		contentType = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
+	}
+
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%q", outputFile))
+	c.File(outputPath)
+	c.Header("Content-Type", contentType)
+}
--- a/server/handlers/health_admin.go
+++ b/server/handlers/health_admin.go
@@ -79,6 +79,9 @@ func (h *HealthAdminHandler) GetAllProviderHealth(c *gin.Context) {
 			Status:           health.DeriveStatus(w.ErrorRate(), w.RequestCount),
 			RequestCount:     w.RequestCount,
 			ErrorRate:        w.ErrorRate(),
+			ErrorCount:       w.ErrorCount,
+			RateLimitCount:   w.RateLimitCount,
+			TimeoutCount:     w.TimeoutCount,
 			AvgLatencyMs:     w.AvgLatencyMs(),
 			MaxLatencyMs:     w.MaxLatencyMs,
 			LastError:        w.LastError,
--- a/server/handlers/stream_loop.go
+++ b/server/handlers/stream_loop.go
@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"log"
 	"net/http"
+	"strings"
 	"time"

 	"github.com/gin-gonic/gin"
@@ -35,7 +36,11 @@ func recordHealthFn(hr HealthRecorder, configID string, start time.Time, err err
 	latencyMs := int(time.Since(start).Milliseconds())
 	if err != nil {
 		errMsg := err.Error()
+		if strings.Contains(errMsg, "HTTP 429") || strings.Contains(errMsg, "rate limit") || strings.Contains(errMsg, "Too Many Requests") {
+			hr.RecordRateLimit(configID, latencyMs, errMsg)
+		} else {
 			hr.RecordError(configID, latencyMs, errMsg)
+		}
 	} else {
 		hr.RecordSuccess(configID, latencyMs)
 	}
@@ -205,9 +210,19 @@ func streamWithToolLoop(
 			var toolResult tools.ToolResult

 			// Check if tool is registered locally (server-side)
+			toolStart := time.Now()
 			if tools.Get(call.Name) != nil {
 				log.Printf("🔧 Executing tool (server): %s (call %s)", call.Name, call.ID)
 				toolResult = tools.ExecuteCall(c.Request.Context(), execCtx, call)
+				// Record tool health (v0.22.4)
+				if health != nil {
+					toolLatency := int(time.Since(toolStart).Milliseconds())
+					if toolResult.IsError {
+						health.RecordToolError(call.Name, toolLatency, toolResult.Content)
+					} else {
+						health.RecordToolSuccess(call.Name, toolLatency)
+					}
+				}
 			} else if hub != nil && hub.IsConnected(userID) {
 				// Route to browser via WebSocket bridge
 				log.Printf("🔧 Executing tool (browser): %s (call %s)", call.Name, call.ID)
@@ -418,8 +433,18 @@ func streamModelResponse(
 			}

 			var toolResult tools.ToolResult
+			toolStart := time.Now()
 			if tools.Get(call.Name) != nil {
 				toolResult = tools.ExecuteCall(c.Request.Context(), execCtx, call)
+				// Record tool health (v0.22.4)
+				if health != nil {
+					toolLatency := int(time.Since(toolStart).Milliseconds())
+					if toolResult.IsError {
+						health.RecordToolError(call.Name, toolLatency, toolResult.Content)
+					} else {
+						health.RecordToolSuccess(call.Name, toolLatency)
+					}
+				}
 			} else if hub != nil && hub.IsConnected(userID) {
 				toolResult = executeBrowserTool(hub, userID, call)
 			} else {
--- a/server/health/accumulator.go
+++ b/server/health/accumulator.go
@@ -44,6 +44,13 @@ type Store interface {

 	// Prune deletes rows older than the given time.
 	Prune(ctx context.Context, before time.Time) (int64, error)
+
+	// ── Tool Health (v0.22.4) ──────────────
+	// UpsertToolWindow merges tool health counters into the hourly bucket.
+	UpsertToolWindow(ctx context.Context, w *models.ToolHealthWindow) error
+
+	// ListAllToolCurrent returns the current-hour bucket for every tool.
+	ListAllToolCurrent(ctx context.Context) ([]models.ToolHealthWindow, error)
 }

 // ── In-Memory Bucket ────────────────────────
@@ -54,6 +61,7 @@ type bucket struct {
 	requestCount     int
 	errorCount       int
 	timeoutCount     int
+	rateLimitCount   int
 	totalLatencyMs   int64
 	maxLatencyMs     int
 	lastError        string
@@ -67,15 +75,43 @@ type bucket struct {
 type Accumulator struct {
 	mu      sync.Mutex
 	buckets map[string]*bucket // keyed by provider_config_id
+
+	// Tool health (v0.22.4)
+	toolMu      sync.Mutex
+	toolBuckets map[string]*toolBucket // keyed by tool_name
+
 	store    Store
 	stopCh   chan struct{}
 	wg       sync.WaitGroup
+
+	// Auto-disable (v0.22.4): if set, providers that are "down" for
+	// N consecutive windows get auto-deactivated.
+	autoDisabler         AutoDisabler
+	autoDisableThreshold int // consecutive down windows to trigger (0 = disabled)
+}
+
+// AutoDisabler marks a provider config as inactive. Implemented by the
+// provider store so the accumulator doesn't need to import the store package.
+type AutoDisabler interface {
+	DeactivateProvider(ctx context.Context, configID string) error
+}
+
+// toolBucket holds counters for one tool within one flush interval.
+type toolBucket struct {
+	toolName       string
+	requestCount   int
+	errorCount     int
+	totalLatencyMs int64
+	maxLatencyMs   int
+	lastError      string
+	lastErrorAt    time.Time
 }

 // NewAccumulator creates and starts the background flush loop.
 func NewAccumulator(store Store) *Accumulator {
 	a := &Accumulator{
 		buckets:     make(map[string]*bucket),
+		toolBuckets: make(map[string]*toolBucket),
 		store:       store,
 		stopCh:      make(chan struct{}),
 	}
@@ -84,6 +120,41 @@ func NewAccumulator(store Store) *Accumulator {
 	return a
 }

+// SetAutoDisable configures the auto-disable policy. When a provider
+// has been "down" for N consecutive hourly windows, it is deactivated.
+// N=0 disables the feature.
+func (a *Accumulator) SetAutoDisable(disabler AutoDisabler, threshold int) {
+	a.autoDisabler = disabler
+	a.autoDisableThreshold = threshold
+}
+
+// RecordToolSuccess records a successful tool execution.
+func (a *Accumulator) RecordToolSuccess(toolName string, latencyMs int) {
+	a.toolMu.Lock()
+	defer a.toolMu.Unlock()
+	b := a.getToolBucket(toolName)
+	b.requestCount++
+	b.totalLatencyMs += int64(latencyMs)
+	if latencyMs > b.maxLatencyMs {
+		b.maxLatencyMs = latencyMs
+	}
+}
+
+// RecordToolError records a failed tool execution.
+func (a *Accumulator) RecordToolError(toolName string, latencyMs int, errMsg string) {
+	a.toolMu.Lock()
+	defer a.toolMu.Unlock()
+	b := a.getToolBucket(toolName)
+	b.requestCount++
+	b.errorCount++
+	b.totalLatencyMs += int64(latencyMs)
+	if latencyMs > b.maxLatencyMs {
+		b.maxLatencyMs = latencyMs
+	}
+	b.lastError = errMsg
+	b.lastErrorAt = time.Now().UTC()
+}
+
 // RecordSuccess records a successful provider call.
 func (a *Accumulator) RecordSuccess(providerConfigID string, latencyMs int) {
 	a.mu.Lock()
@@ -127,6 +198,47 @@ func (a *Accumulator) RecordTimeout(providerConfigID string, latencyMs int, errM
 	b.lastErrorAt = time.Now().UTC()
 }

+// RecordRateLimit records a rate-limited provider call (HTTP 429).
+// Counted as both an error and a rate limit event.
+func (a *Accumulator) RecordRateLimit(providerConfigID string, latencyMs int, errMsg string) {
+	a.mu.Lock()
+	defer a.mu.Unlock()
+	b := a.getBucket(providerConfigID)
+	b.requestCount++
+	b.errorCount++
+	b.rateLimitCount++
+	b.totalLatencyMs += int64(latencyMs)
+	if latencyMs > b.maxLatencyMs {
+		b.maxLatencyMs = latencyMs
+	}
+	b.lastError = errMsg
+	b.lastErrorAt = time.Now().UTC()
+}
+
+// IsRateLimitError returns true if the error message indicates an HTTP 429.
+func IsRateLimitError(errMsg string) bool {
+	return len(errMsg) > 0 && (contains(errMsg, "HTTP 429") || contains(errMsg, "rate limit") || contains(errMsg, "too many requests"))
+}
+
+func contains(s, sub string) bool {
+	return len(s) >= len(sub) && (s == sub || len(s) > 0 && containsLower(s, sub))
+}
+
+func containsLower(s, sub string) bool {
+	// Simple case-insensitive contains for short substrings.
+	for i := 0; i <= len(s)-len(sub); i++ {
+		match := true
+		for j := 0; j < len(sub); j++ {
+			sc, tc := s[i+j], sub[j]
+			if sc >= 'A' && sc <= 'Z' { sc += 32 }
+			if tc >= 'A' && tc <= 'Z' { tc += 32 }
+			if sc != tc { match = false; break }
+		}
+		if match { return true }
+	}
+	return false
+}
+
 // Stop halts the flush loop and performs a final flush.
 func (a *Accumulator) Stop() {
 	close(a.stopCh)
@@ -158,6 +270,15 @@ func (a *Accumulator) getBucket(providerConfigID string) *bucket {
 	return b
 }

+func (a *Accumulator) getToolBucket(toolName string) *toolBucket {
+	b, ok := a.toolBuckets[toolName]
+	if !ok {
+		b = &toolBucket{toolName: toolName}
+		a.toolBuckets[toolName] = b
+	}
+	return b
+}
+
 func (a *Accumulator) flushLoop() {
 	defer a.wg.Done()
 	ticker := time.NewTicker(FlushInterval)
@@ -167,8 +288,11 @@ func (a *Accumulator) flushLoop() {
 		select {
 		case <-ticker.C:
 			a.flush()
+			a.flushTools()
+			a.checkAutoDisable()
 		case <-a.stopCh:
 			a.flush() // final flush
+			a.flushTools()
 			return
 		}
 	}
@@ -199,6 +323,7 @@ func (a *Accumulator) flush() {
 			RequestCount:     b.requestCount,
 			ErrorCount:       b.errorCount,
 			TimeoutCount:     b.timeoutCount,
+			RateLimitCount:   b.rateLimitCount,
 			TotalLatencyMs:   b.totalLatencyMs,
 			MaxLatencyMs:     b.maxLatencyMs,
 		}
@@ -213,6 +338,89 @@ func (a *Accumulator) flush() {
 	}
 }

+// flushTools writes tool health buckets to the database.
+func (a *Accumulator) flushTools() {
+	a.toolMu.Lock()
+	if len(a.toolBuckets) == 0 {
+		a.toolMu.Unlock()
+		return
+	}
+	snap := a.toolBuckets
+	a.toolBuckets = make(map[string]*toolBucket, len(snap))
+	a.toolMu.Unlock()
+
+	windowStart := hourFloor(time.Now().UTC())
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	for _, b := range snap {
+		if b.requestCount == 0 {
+			continue
+		}
+		w := &models.ToolHealthWindow{
+			ToolName:       b.toolName,
+			WindowStart:    windowStart,
+			RequestCount:   b.requestCount,
+			ErrorCount:     b.errorCount,
+			TotalLatencyMs: b.totalLatencyMs,
+			MaxLatencyMs:   b.maxLatencyMs,
+		}
+		if b.lastError != "" {
+			w.LastError = &b.lastError
+			ts := b.lastErrorAt.Format(time.RFC3339)
+			w.LastErrorAt = &ts
+		}
+		if err := a.store.UpsertToolWindow(ctx, w); err != nil {
+			log.Printf("⚠ health: tool flush failed for %s: %v", b.toolName, err)
+		}
+	}
+}
+
+// checkAutoDisable inspects recent health windows and deactivates providers
+// that have been "down" for too many consecutive hours.
+func (a *Accumulator) checkAutoDisable() {
+	if a.autoDisabler == nil || a.autoDisableThreshold <= 0 {
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	// Get current windows for all providers
+	windows, err := a.store.ListAllCurrent(ctx)
+	if err != nil {
+		return
+	}
+
+	for _, w := range windows {
+		status := DeriveStatus(w.ErrorRate(), w.RequestCount)
+		if status != models.StatusDown {
+			continue
+		}
+
+		// Check last N windows — are they all down?
+		recent, err := a.store.ListWindows(ctx, w.ProviderConfigID, a.autoDisableThreshold)
+		if err != nil || len(recent) < a.autoDisableThreshold {
+			continue // not enough data
+		}
+
+		allDown := true
+		for _, rw := range recent {
+			if DeriveStatus(rw.ErrorRate(), rw.RequestCount) != models.StatusDown {
+				allDown = false
+				break
+			}
+		}
+
+		if allDown {
+			log.Printf("⚠ health: auto-disabling provider %s — down for %d consecutive windows", w.ProviderConfigID, a.autoDisableThreshold)
+			if err := a.autoDisabler.DeactivateProvider(ctx, w.ProviderConfigID); err != nil {
+				log.Printf("⚠ health: auto-disable failed for %s: %v", w.ProviderConfigID, err)
+			}
+		}
+	}
+}
+
 // hourFloor truncates a time to the start of its hour.
 func hourFloor(t time.Time) time.Time {
 	return t.Truncate(time.Hour)
--- a/server/health/accumulator_test.go
+++ b/server/health/accumulator_test.go
@@ -70,6 +70,14 @@ func (m *mockStore) ListAllCurrent(_ context.Context) ([]models.ProviderHealthWi

 func (m *mockStore) Prune(_ context.Context, _ time.Time) (int64, error) { return 0, nil }

+func (m *mockStore) UpsertToolWindow(_ context.Context, _ *models.ToolHealthWindow) error {
+	return nil
+}
+
+func (m *mockStore) ListAllToolCurrent(_ context.Context) ([]models.ToolHealthWindow, error) {
+	return nil, nil
+}
+
 // ── Tests ───────────────────────────────────

 func TestRecordSuccess(t *testing.T) {
--- a/server/main.go
+++ b/server/main.go
@@ -29,6 +29,7 @@ import (
 	"git.gobha.me/xcaliber/chat-switchboard/storage"
 	"git.gobha.me/xcaliber/chat-switchboard/store"
 	postgres "git.gobha.me/xcaliber/chat-switchboard/store/postgres"
+	sqliteStore "git.gobha.me/xcaliber/chat-switchboard/store/sqlite"
 	"git.gobha.me/xcaliber/chat-switchboard/tools"
 	"git.gobha.me/xcaliber/chat-switchboard/tools/search"
 	"git.gobha.me/xcaliber/chat-switchboard/workspace"
@@ -57,7 +58,7 @@ func main() {
 	var keyResolver *crypto.KeyResolver
 	var objStore storage.ObjectStore
 	var healthAccum *health.Accumulator
-	var healthStore *postgres.HealthStore
+	var healthStore health.Store

 	if err := database.Connect(cfg); err != nil {
 		log.Printf("⚠ Database unavailable: %v", err)
@@ -94,10 +95,28 @@ func main() {
 		stores = postgres.NewStores(database.DB)

 		// Provider health accumulator (v0.22.0)
+		if database.IsSQLite() {
+			healthStore = sqliteStore.NewHealthStore()
+		} else {
 			healthStore = postgres.NewHealthStore(database.DB)
+		}
 		healthAccum = health.NewAccumulator(healthStore)
 		defer healthAccum.Stop()

+		// Auto-disable: deactivate providers that are "down" for N consecutive
+		// hourly windows. Configured via PROVIDER_AUTO_DISABLE_THRESHOLD env var.
+		// Default: 3 (3 consecutive "down" hours triggers deactivation). Set to 0 to disable.
+		autoDisableThreshold := 3
+		if v := cfg.ProviderAutoDisableThreshold; v >= 0 {
+			autoDisableThreshold = v
+		}
+		if autoDisableThreshold > 0 {
+			if ad, ok := healthStore.(health.AutoDisabler); ok {
+				healthAccum.SetAutoDisable(ad, autoDisableThreshold)
+				log.Printf("  🛡️ Provider auto-disable: %d consecutive down windows", autoDisableThreshold)
+			}
+		}
+
 		// Background health cleanup: prune windows older than 7 days
 		go func() {
 			ticker := time.NewTicker(6 * time.Hour)
@@ -472,6 +491,15 @@ func main() {
 			protected.DELETE("/projects/:id/notes/:noteId", projectH.RemoveNote)
 			protected.GET("/projects/:id/notes", projectH.ListNotes)

+			// Project files (v0.22.4) — wired via attachH which is declared later,
+			// so we use a closure that captures the variable.
+			protected.POST("/projects/:id/files", func(c *gin.Context) {
+				handlers.NewAttachmentHandler(stores, objStore, extQueue).UploadToProject(c)
+			})
+			protected.GET("/projects/:id/files", func(c *gin.Context) {
+				handlers.NewAttachmentHandler(stores, objStore, extQueue).ListByProject(c)
+			})
+
 			// Notifications (v0.20.0)
 			notifH := handlers.NewNotificationHandler(stores, hub)
 			protected.GET("/notifications", notifH.List)
@@ -533,6 +561,10 @@ func main() {
 			protected.GET("/attachments/:id/download", attachH.Download)
 			protected.DELETE("/attachments/:id", attachH.DeleteAttachment)

+			// Export (v0.22.4) — pandoc-based markdown → PDF/DOCX conversion
+			exportH := handlers.NewExportHandler()
+			protected.POST("/export", exportH.Convert)
+
 			// Hook: clean up storage files when channels are deleted
 			handlers.SetChannelDeleteHook(attachH.CleanupChannelStorage)

--- a/server/models/models.go
+++ b/server/models/models.go
@@ -506,6 +506,7 @@ type Attachment struct {
 	ChannelID     string  `json:"channel_id" db:"channel_id"`
 	UserID        string  `json:"user_id" db:"user_id"`
 	MessageID     *string `json:"message_id,omitempty" db:"message_id"`
+	ProjectID     *string `json:"project_id,omitempty" db:"project_id"` // v0.22.4: project-scoped uploads
 	Filename      string  `json:"filename" db:"filename"`
 	ContentType   string  `json:"content_type" db:"content_type"`
 	SizeBytes     int64   `json:"size_bytes" db:"size_bytes"`
@@ -890,6 +891,7 @@ type ProviderHealthWindow struct {
 	RequestCount     int       `json:"request_count" db:"request_count"`
 	ErrorCount       int       `json:"error_count" db:"error_count"`
 	TimeoutCount     int       `json:"timeout_count" db:"timeout_count"`
+	RateLimitCount   int       `json:"rate_limit_count" db:"rate_limit_count"` // v0.22.4
 	TotalLatencyMs   int64     `json:"total_latency_ms" db:"total_latency_ms"`
 	MaxLatencyMs     int       `json:"max_latency_ms" db:"max_latency_ms"`
 	LastError        *string   `json:"last_error,omitempty" db:"last_error"`
@@ -919,12 +921,38 @@ type ProviderHealthSummary struct {
 	Status           ProviderStatus `json:"status"`
 	RequestCount     int            `json:"request_count"`      // last hour
 	ErrorRate        float64        `json:"error_rate"`         // last hour
+	ErrorCount       int            `json:"error_count"`        // last hour
+	RateLimitCount   int            `json:"rate_limit_count"`   // last hour (v0.22.4)
+	TimeoutCount     int            `json:"timeout_count"`      // last hour
 	AvgLatencyMs     int            `json:"avg_latency_ms"`     // last hour
 	MaxLatencyMs     int            `json:"max_latency_ms"`     // last hour
 	LastError        *string        `json:"last_error,omitempty"`
 	LastErrorAt      *string        `json:"last_error_at,omitempty"`
 }

+// ToolHealthWindow tracks health of built-in tools (web_search, url_fetch, etc.)
+// in hourly buckets, analogous to ProviderHealthWindow.
+type ToolHealthWindow struct {
+	ID             string    `json:"id" db:"id"`
+	ToolName       string    `json:"tool_name" db:"tool_name"`
+	WindowStart    time.Time `json:"window_start" db:"window_start"`
+	RequestCount   int       `json:"request_count" db:"request_count"`
+	ErrorCount     int       `json:"error_count" db:"error_count"`
+	TotalLatencyMs int64     `json:"total_latency_ms" db:"total_latency_ms"`
+	MaxLatencyMs   int       `json:"max_latency_ms" db:"max_latency_ms"`
+	LastError      *string   `json:"last_error,omitempty" db:"last_error"`
+	LastErrorAt    *string   `json:"last_error_at,omitempty" db:"last_error_at"`
+}
+
+// ToolHealthSummary is the API response for a tool's health.
+type ToolHealthSummary struct {
+	ToolName     string  `json:"tool_name"`
+	Status       string  `json:"status"` // healthy, degraded, down, unknown
+	RequestCount int     `json:"request_count"`
+	ErrorRate    float64 `json:"error_rate"`
+	AvgLatencyMs int     `json:"avg_latency_ms"`
+}
+
 // =========================================
 // CAPABILITY OVERRIDES (v0.22.0)
 // =========================================
--- a/server/store/interfaces.go
+++ b/server/store/interfaces.go
@@ -393,6 +393,7 @@ type AttachmentStore interface {
 	GetByID(ctx context.Context, id string) (*models.Attachment, error)
 	GetByChannel(ctx context.Context, channelID string) ([]models.Attachment, error)
 	GetByMessage(ctx context.Context, messageID string) ([]models.Attachment, error)
+	GetByProject(ctx context.Context, projectID string) ([]models.Attachment, error) // v0.22.4
 	SetMessageID(ctx context.Context, attachmentID, messageID string) error
 	UpdateMetadata(ctx context.Context, id string, metadata map[string]interface{}) error
 	SetExtractedText(ctx context.Context, id string, text string) error
--- a/server/store/postgres/attachment.go
+++ b/server/store/postgres/attachment.go
@@ -14,18 +14,19 @@ type AttachmentStore struct{}
 func NewAttachmentStore() *AttachmentStore { return &AttachmentStore{} }

 // ── columns shared across queries ──────────
-const attachmentCols = `id, channel_id, user_id, message_id, filename, content_type,
+const attachmentCols = `id, channel_id, user_id, message_id, project_id, filename, content_type,
 	size_bytes, storage_key, extracted_text, metadata, created_at`

 // scanAttachment scans a row into an Attachment struct.
 func scanAttachment(row interface{ Scan(dest ...interface{}) error }) (*models.Attachment, error) {
 	var a models.Attachment
 	var messageID sql.NullString
+	var projectID sql.NullString
 	var extractedText sql.NullString
 	var metadataJSON []byte

 	err := row.Scan(
-		&a.ID, &a.ChannelID, &a.UserID, &messageID,
+		&a.ID, &a.ChannelID, &a.UserID, &messageID, &projectID,
 		&a.Filename, &a.ContentType, &a.SizeBytes,
 		&a.StorageKey, &extractedText, &metadataJSON, &a.CreatedAt,
 	)
@@ -34,6 +35,7 @@ func scanAttachment(row interface{ Scan(dest ...interface{}) error }) (*models.A
 	}

 	a.MessageID = NullableStringPtr(messageID)
+	a.ProjectID = NullableStringPtr(projectID)
 	if extractedText.Valid {
 		a.ExtractedText = &extractedText.String
 	}
@@ -45,11 +47,12 @@ func scanAttachment(row interface{ Scan(dest ...interface{}) error }) (*models.A

 func (s *AttachmentStore) Create(ctx context.Context, a *models.Attachment) error {
 	return DB.QueryRowContext(ctx, `
-		INSERT INTO attachments (channel_id, user_id, message_id, filename, content_type,
+		INSERT INTO attachments (channel_id, user_id, message_id, project_id, filename, content_type,
 			size_bytes, storage_key, extracted_text, metadata)
-		VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9)
+		VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10)
 		RETURNING id, created_at`,
 		a.ChannelID, a.UserID, models.NullString(a.MessageID),
+		models.NullString(a.ProjectID),
 		a.Filename, a.ContentType, a.SizeBytes,
 		a.StorageKey, models.NullString(a.ExtractedText),
 		ToJSON(a.Metadata),
@@ -99,6 +102,26 @@ func (s *AttachmentStore) GetByMessage(ctx context.Context, messageID string) ([
 	return out, rows.Err()
 }

+// GetByProject returns all attachments for a project (v0.22.4).
+func (s *AttachmentStore) GetByProject(ctx context.Context, projectID string) ([]models.Attachment, error) {
+	rows, err := DB.QueryContext(ctx,
+		`SELECT `+attachmentCols+` FROM attachments WHERE project_id = $1 ORDER BY created_at`, projectID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []models.Attachment
+	for rows.Next() {
+		a, err := scanAttachment(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *a)
+	}
+	return out, rows.Err()
+}
+
 func (s *AttachmentStore) SetMessageID(ctx context.Context, attachmentID, messageID string) error {
 	_, err := DB.ExecContext(ctx,
 		`UPDATE attachments SET message_id = $1 WHERE id = $2`,
--- a/server/store/postgres/health.go
+++ b/server/store/postgres/health.go
@@ -20,20 +20,21 @@ func NewHealthStore(db *sql.DB) *HealthStore {
 func (s *HealthStore) UpsertWindow(ctx context.Context, w *models.ProviderHealthWindow) error {
 	_, err := s.db.ExecContext(ctx, `
 		INSERT INTO provider_health (provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at, updated_at)
-		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, now())
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, now())
 		ON CONFLICT (provider_config_id, window_start) DO UPDATE SET
 			request_count    = provider_health.request_count + EXCLUDED.request_count,
 			error_count      = provider_health.error_count + EXCLUDED.error_count,
 			timeout_count    = provider_health.timeout_count + EXCLUDED.timeout_count,
+			rate_limit_count = provider_health.rate_limit_count + EXCLUDED.rate_limit_count,
 			total_latency_ms = provider_health.total_latency_ms + EXCLUDED.total_latency_ms,
 			max_latency_ms   = GREATEST(provider_health.max_latency_ms, EXCLUDED.max_latency_ms),
 			last_error       = COALESCE(EXCLUDED.last_error, provider_health.last_error),
 			last_error_at    = COALESCE(EXCLUDED.last_error_at, provider_health.last_error_at),
 			updated_at       = now()
 	`, w.ProviderConfigID, w.WindowStart,
-		w.RequestCount, w.ErrorCount, w.TimeoutCount,
+		w.RequestCount, w.ErrorCount, w.TimeoutCount, w.RateLimitCount,
 		w.TotalLatencyMs, w.MaxLatencyMs, w.LastError, w.LastErrorAt,
 	)
 	return err
@@ -44,13 +45,13 @@ func (s *HealthStore) GetCurrentWindow(ctx context.Context, providerConfigID str
 	var w models.ProviderHealthWindow
 	err := s.db.QueryRowContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE provider_config_id = $1 AND window_start = $2
 	`, providerConfigID, windowStart).Scan(
 		&w.ID, &w.ProviderConfigID, &w.WindowStart,
-		&w.RequestCount, &w.ErrorCount, &w.TimeoutCount,
+		&w.RequestCount, &w.ErrorCount, &w.TimeoutCount, &w.RateLimitCount,
 		&w.TotalLatencyMs, &w.MaxLatencyMs, &w.LastError, &w.LastErrorAt,
 	)
 	if err == sql.ErrNoRows {
@@ -62,7 +63,7 @@ func (s *HealthStore) GetCurrentWindow(ctx context.Context, providerConfigID str
 func (s *HealthStore) ListWindows(ctx context.Context, providerConfigID string, hours int) ([]models.ProviderHealthWindow, error) {
 	rows, err := s.db.QueryContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE provider_config_id = $1
@@ -79,7 +80,7 @@ func (s *HealthStore) ListWindows(ctx context.Context, providerConfigID string,
 		var w models.ProviderHealthWindow
 		if err := rows.Scan(
 			&w.ID, &w.ProviderConfigID, &w.WindowStart,
-			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount,
+			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount, &w.RateLimitCount,
 			&w.TotalLatencyMs, &w.MaxLatencyMs, &w.LastError, &w.LastErrorAt,
 		); err != nil {
 			return nil, err
@@ -93,7 +94,7 @@ func (s *HealthStore) ListAllCurrent(ctx context.Context) ([]models.ProviderHeal
 	windowStart := time.Now().UTC().Truncate(time.Hour)
 	rows, err := s.db.QueryContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE window_start = $1
@@ -109,7 +110,7 @@ func (s *HealthStore) ListAllCurrent(ctx context.Context) ([]models.ProviderHeal
 		var w models.ProviderHealthWindow
 		if err := rows.Scan(
 			&w.ID, &w.ProviderConfigID, &w.WindowStart,
-			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount,
+			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount, &w.RateLimitCount,
 			&w.TotalLatencyMs, &w.MaxLatencyMs, &w.LastError, &w.LastErrorAt,
 		); err != nil {
 			return nil, err
@@ -126,5 +127,66 @@ func (s *HealthStore) Prune(ctx context.Context, before time.Time) (int64, error
 	if err != nil {
 		return 0, err
 	}
+	// Also prune tool health
+	s.db.ExecContext(ctx, `DELETE FROM tool_health WHERE window_start < $1`, before)
 	return result.RowsAffected()
 }
+
+// ── Tool Health (v0.22.4) ────────────────────
+
+func (s *HealthStore) UpsertToolWindow(ctx context.Context, w *models.ToolHealthWindow) error {
+	_, err := s.db.ExecContext(ctx, `
+		INSERT INTO tool_health (tool_name, window_start,
+			request_count, error_count, total_latency_ms, max_latency_ms,
+			last_error, last_error_at, updated_at)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, now())
+		ON CONFLICT (tool_name, window_start) DO UPDATE SET
+			request_count    = tool_health.request_count + EXCLUDED.request_count,
+			error_count      = tool_health.error_count + EXCLUDED.error_count,
+			total_latency_ms = tool_health.total_latency_ms + EXCLUDED.total_latency_ms,
+			max_latency_ms   = GREATEST(tool_health.max_latency_ms, EXCLUDED.max_latency_ms),
+			last_error       = COALESCE(EXCLUDED.last_error, tool_health.last_error),
+			last_error_at    = COALESCE(EXCLUDED.last_error_at, tool_health.last_error_at),
+			updated_at       = now()
+	`, w.ToolName, w.WindowStart,
+		w.RequestCount, w.ErrorCount, w.TotalLatencyMs, w.MaxLatencyMs,
+		w.LastError, w.LastErrorAt,
+	)
+	return err
+}
+
+func (s *HealthStore) ListAllToolCurrent(ctx context.Context) ([]models.ToolHealthWindow, error) {
+	windowStart := time.Now().UTC().Truncate(time.Hour)
+	rows, err := s.db.QueryContext(ctx, `
+		SELECT id, tool_name, window_start,
+			request_count, error_count, total_latency_ms, max_latency_ms,
+			last_error, last_error_at
+		FROM tool_health
+		WHERE window_start = $1
+		ORDER BY tool_name
+	`, windowStart)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var result []models.ToolHealthWindow
+	for rows.Next() {
+		var w models.ToolHealthWindow
+		if err := rows.Scan(
+			&w.ID, &w.ToolName, &w.WindowStart,
+			&w.RequestCount, &w.ErrorCount, &w.TotalLatencyMs, &w.MaxLatencyMs,
+			&w.LastError, &w.LastErrorAt,
+		); err != nil {
+			return nil, err
+		}
+		result = append(result, w)
+	}
+	return result, rows.Err()
+}
+
+// DeactivateProvider marks a provider config as inactive (for auto-disable).
+func (s *HealthStore) DeactivateProvider(ctx context.Context, configID string) error {
+	_, err := s.db.ExecContext(ctx, `UPDATE provider_configs SET is_active = false WHERE id = $1`, configID)
+	return err
+}
--- a/server/store/sqlite/attachment.go
+++ b/server/store/sqlite/attachment.go
@@ -15,18 +15,19 @@ type AttachmentStore struct{}
 func NewAttachmentStore() *AttachmentStore { return &AttachmentStore{} }

 // ── columns shared across queries ──────────
-const attachmentCols = `id, channel_id, user_id, message_id, filename, content_type,
+const attachmentCols = `id, channel_id, user_id, message_id, project_id, filename, content_type,
 	size_bytes, storage_key, extracted_text, metadata, created_at`

 // scanAttachment scans a row into an Attachment struct.
 func scanAttachment(row interface{ Scan(dest ...interface{}) error }) (*models.Attachment, error) {
 	var a models.Attachment
 	var messageID sql.NullString
+	var projectID sql.NullString
 	var extractedText sql.NullString
 	var metadataJSON []byte

 	err := row.Scan(
-		&a.ID, &a.ChannelID, &a.UserID, &messageID,
+		&a.ID, &a.ChannelID, &a.UserID, &messageID, &projectID,
 		&a.Filename, &a.ContentType, &a.SizeBytes,
 		&a.StorageKey, &extractedText, &metadataJSON, st(&a.CreatedAt),
 	)
@@ -35,6 +36,7 @@ func scanAttachment(row interface{ Scan(dest ...interface{}) error }) (*models.A
 	}

 	a.MessageID = NullableStringPtr(messageID)
+	a.ProjectID = NullableStringPtr(projectID)
 	if extractedText.Valid {
 		a.ExtractedText = &extractedText.String
 	}
@@ -48,10 +50,11 @@ func (s *AttachmentStore) Create(ctx context.Context, a *models.Attachment) erro
 	a.ID = store.NewID()
 	a.CreatedAt = time.Now().UTC()
 	_, err := DB.ExecContext(ctx, `
-		INSERT INTO attachments (id, channel_id, user_id, message_id, filename, content_type,
+		INSERT INTO attachments (id, channel_id, user_id, message_id, project_id, filename, content_type,
 			size_bytes, storage_key, extracted_text, metadata, created_at)
-		VALUES (?,?,?,?,?,?,?,?,?,?,?)`,
+		VALUES (?,?,?,?,?,?,?,?,?,?,?,?)`,
 		a.ID, a.ChannelID, a.UserID, models.NullString(a.MessageID),
+		models.NullString(a.ProjectID),
 		a.Filename, a.ContentType, a.SizeBytes,
 		a.StorageKey, models.NullString(a.ExtractedText),
 		ToJSON(a.Metadata), a.CreatedAt.Format(timeFmt),
@@ -102,6 +105,26 @@ func (s *AttachmentStore) GetByMessage(ctx context.Context, messageID string) ([
 	return out, rows.Err()
 }

+// GetByProject returns all attachments for a project (v0.22.4).
+func (s *AttachmentStore) GetByProject(ctx context.Context, projectID string) ([]models.Attachment, error) {
+	rows, err := DB.QueryContext(ctx,
+		`SELECT `+attachmentCols+` FROM attachments WHERE project_id = ? ORDER BY created_at`, projectID)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var out []models.Attachment
+	for rows.Next() {
+		a, err := scanAttachment(rows)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, *a)
+	}
+	return out, rows.Err()
+}
+
 func (s *AttachmentStore) SetMessageID(ctx context.Context, attachmentID, messageID string) error {
 	_, err := DB.ExecContext(ctx,
 		`UPDATE attachments SET message_id = ? WHERE id = ?`,
--- a/server/store/sqlite/health.go
+++ b/server/store/sqlite/health.go
@@ -18,20 +18,21 @@ func (s *HealthStore) UpsertWindow(ctx context.Context, w *models.ProviderHealth
 	windowStr := w.WindowStart.Format(timeFmt)
 	_, err := DB.ExecContext(ctx, `
 		INSERT INTO provider_health (id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at, updated_at)
-		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, datetime('now'))
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, datetime('now'))
 		ON CONFLICT (provider_config_id, window_start) DO UPDATE SET
 			request_count    = provider_health.request_count + excluded.request_count,
 			error_count      = provider_health.error_count + excluded.error_count,
 			timeout_count    = provider_health.timeout_count + excluded.timeout_count,
+			rate_limit_count = provider_health.rate_limit_count + excluded.rate_limit_count,
 			total_latency_ms = provider_health.total_latency_ms + excluded.total_latency_ms,
 			max_latency_ms   = MAX(provider_health.max_latency_ms, excluded.max_latency_ms),
 			last_error       = COALESCE(excluded.last_error, provider_health.last_error),
 			last_error_at    = COALESCE(excluded.last_error_at, provider_health.last_error_at),
 			updated_at       = datetime('now')
 	`, id, w.ProviderConfigID, windowStr,
-		w.RequestCount, w.ErrorCount, w.TimeoutCount,
+		w.RequestCount, w.ErrorCount, w.TimeoutCount, w.RateLimitCount,
 		w.TotalLatencyMs, w.MaxLatencyMs, w.LastError, w.LastErrorAt,
 	)
 	return err
@@ -43,13 +44,13 @@ func (s *HealthStore) GetCurrentWindow(ctx context.Context, providerConfigID str
 	var windowStartStr string
 	err := DB.QueryRowContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE provider_config_id = ? AND window_start = ?
 	`, providerConfigID, windowStr).Scan(
 		&w.ID, &w.ProviderConfigID, &windowStartStr,
-		&w.RequestCount, &w.ErrorCount, &w.TimeoutCount,
+		&w.RequestCount, &w.ErrorCount, &w.TimeoutCount, &w.RateLimitCount,
 		&w.TotalLatencyMs, &w.MaxLatencyMs, &w.LastError, &w.LastErrorAt,
 	)
 	if err == sql.ErrNoRows {
@@ -65,7 +66,7 @@ func (s *HealthStore) GetCurrentWindow(ctx context.Context, providerConfigID str
 func (s *HealthStore) ListWindows(ctx context.Context, providerConfigID string, hours int) ([]models.ProviderHealthWindow, error) {
 	rows, err := DB.QueryContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE provider_config_id = ?
@@ -83,7 +84,7 @@ func (s *HealthStore) ListAllCurrent(ctx context.Context) ([]models.ProviderHeal
 	windowStr := time.Now().UTC().Truncate(time.Hour).Format(timeFmt)
 	rows, err := DB.QueryContext(ctx, `
 		SELECT id, provider_config_id, window_start,
-			request_count, error_count, timeout_count,
+			request_count, error_count, timeout_count, rate_limit_count,
 			total_latency_ms, max_latency_ms, last_error, last_error_at
 		FROM provider_health
 		WHERE window_start = ?
@@ -103,9 +104,72 @@ func (s *HealthStore) Prune(ctx context.Context, before time.Time) (int64, error
 	if err != nil {
 		return 0, err
 	}
+	DB.ExecContext(ctx, `DELETE FROM tool_health WHERE window_start < ?`, before.Format(timeFmt))
 	return result.RowsAffected()
 }

+// ── Tool Health (v0.22.4) ────────────────────
+
+func (s *HealthStore) UpsertToolWindow(ctx context.Context, w *models.ToolHealthWindow) error {
+	id := store.NewID()
+	windowStr := w.WindowStart.Format(timeFmt)
+	_, err := DB.ExecContext(ctx, `
+		INSERT INTO tool_health (id, tool_name, window_start,
+			request_count, error_count, total_latency_ms, max_latency_ms,
+			last_error, last_error_at, updated_at)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, datetime('now'))
+		ON CONFLICT (tool_name, window_start) DO UPDATE SET
+			request_count    = tool_health.request_count + excluded.request_count,
+			error_count      = tool_health.error_count + excluded.error_count,
+			total_latency_ms = tool_health.total_latency_ms + excluded.total_latency_ms,
+			max_latency_ms   = MAX(tool_health.max_latency_ms, excluded.max_latency_ms),
+			last_error       = COALESCE(excluded.last_error, tool_health.last_error),
+			last_error_at    = COALESCE(excluded.last_error_at, tool_health.last_error_at),
+			updated_at       = datetime('now')
+	`, id, w.ToolName, windowStr,
+		w.RequestCount, w.ErrorCount, w.TotalLatencyMs, w.MaxLatencyMs,
+		w.LastError, w.LastErrorAt,
+	)
+	return err
+}
+
+func (s *HealthStore) ListAllToolCurrent(ctx context.Context) ([]models.ToolHealthWindow, error) {
+	windowStr := time.Now().UTC().Truncate(time.Hour).Format(timeFmt)
+	rows, err := DB.QueryContext(ctx, `
+		SELECT id, tool_name, window_start,
+			request_count, error_count, total_latency_ms, max_latency_ms,
+			last_error, last_error_at
+		FROM tool_health
+		WHERE window_start = ?
+		ORDER BY tool_name
+	`, windowStr)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var result []models.ToolHealthWindow
+	for rows.Next() {
+		var w models.ToolHealthWindow
+		var windowStartStr string
+		if err := rows.Scan(
+			&w.ID, &w.ToolName, &windowStartStr,
+			&w.RequestCount, &w.ErrorCount, &w.TotalLatencyMs, &w.MaxLatencyMs,
+			&w.LastError, &w.LastErrorAt,
+		); err != nil {
+			return nil, err
+		}
+		w.WindowStart, _ = time.Parse(timeFmt, windowStartStr)
+		result = append(result, w)
+	}
+	return result, rows.Err()
+}
+
+func (s *HealthStore) DeactivateProvider(ctx context.Context, configID string) error {
+	_, err := DB.ExecContext(ctx, `UPDATE provider_configs SET is_active = 0 WHERE id = ?`, configID)
+	return err
+}
+
 func scanHealthRows(rows *sql.Rows) ([]models.ProviderHealthWindow, error) {
 	var result []models.ProviderHealthWindow
 	for rows.Next() {
@@ -113,7 +177,7 @@ func scanHealthRows(rows *sql.Rows) ([]models.ProviderHealthWindow, error) {
 		var windowStartStr string
 		if err := rows.Scan(
 			&w.ID, &w.ProviderConfigID, &windowStartStr,
-			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount,
+			&w.RequestCount, &w.ErrorCount, &w.TimeoutCount, &w.RateLimitCount,
 			&w.TotalLatencyMs, &w.MaxLatencyMs, &w.LastError, &w.LastErrorAt,
 		); err != nil {
 			return nil, err
--- a/src/js/api.js
+++ b/src/js/api.js
@@ -259,6 +259,8 @@ const API = {
    getWorkspaceGitBranches(wsId) { return this._get(`/api/v1/workspaces/${wsId}/git/branches`); },
    listWorkspaces() { return this._get('/api/v1/workspaces'); },
    createWorkspace(data) { return this._post('/api/v1/workspaces', data); },
+    updateWorkspace(id, patch) { return this._patch(`/api/v1/workspaces/${id}`, patch); },
+    listGitCredentials() { return this._get('/api/v1/git-credentials'); },

    // ── Messages ─────────────────────────────

@@ -727,6 +729,33 @@ const API = {
    adminListCapabilityOverrides() { return this._get('/api/v1/admin/capability-overrides'); },
    adminGetProviderTypes() { return this._get('/api/v1/admin/provider-types'); },

+    // ── Project Files (v0.22.4) ─────────────
+    async projectUploadFile(projectId, file) {
+        const form = new FormData();
+        form.append('file', file, file.name);
+        const doFetch = () => fetch(BASE + `/api/v1/projects/${projectId}/files`, {
+            method: 'POST',
+            headers: { 'Authorization': `Bearer ${this.accessToken}` },
+            body: form,
+        });
+        let resp = await doFetch();
+        if (resp.status === 401 && this.refreshToken) {
+            await this._refreshAccessToken();
+            resp = await doFetch();
+        }
+        if (!resp.ok) {
+            const data = await resp.json().catch(() => ({}));
+            throw new Error(data.error || `HTTP ${resp.status}`);
+        }
+        return resp.json();
+    },
+    projectListFiles(projectId) { return this._get(`/api/v1/projects/${projectId}/files`); },
+
+    // ── Export (v0.22.4) ────────────────────
+    exportDocument(content, format, filename) {
+        return this._post('/api/v1/export', { content, format, filename });
+    },
+
    // ── User Usage ──────────────────────────
    getMyUsage(params) {
        const q = new URLSearchParams();
--- a/src/js/editor-mode.js
+++ b/src/js/editor-mode.js
@@ -333,6 +333,8 @@ const EditorMode = {
                    <div class="editor-export-menu" id="editorExportMenu">
                        <button class="editor-export-item" data-format="md">Download file</button>
                        <button class="editor-export-item" data-format="html">Export as HTML</button>
+                        <button class="editor-export-item" data-format="pdf">Export as PDF</button>
+                        <button class="editor-export-item" data-format="docx">Export as DOCX</button>
                        <button class="editor-export-item" data-format="clipboard">Copy to clipboard</button>
                    </div>
                </div>
@@ -1020,6 +1022,37 @@ pre{background:#f5f5f5;padding:16px;border-radius:6px;overflow-x:auto}code{font-
                a.click(); URL.revokeObjectURL(url);
                break;
            }
+            case 'pdf':
+            case 'docx': {
+                try {
+                    if (typeof UI !== 'undefined') UI.toast(`Exporting as ${format.toUpperCase()}…`, 'info');
+                    const resp = await fetch(
+                        (window.BASE_PATH || '') + '/api/v1/export',
+                        {
+                            method: 'POST',
+                            headers: {
+                                'Content-Type': 'application/json',
+                                'Authorization': `Bearer ${API.accessToken}`,
+                            },
+                            body: JSON.stringify({ content, format, filename: fileName }),
+                        }
+                    );
+                    if (!resp.ok) {
+                        const data = await resp.json().catch(() => ({}));
+                        throw new Error(data.error || `HTTP ${resp.status}`);
+                    }
+                    const blob = await resp.blob();
+                    const url = URL.createObjectURL(blob);
+                    const a = document.createElement('a');
+                    a.href = url;
+                    a.download = fileName.replace(/\.[^.]+$/, '.' + format);
+                    a.click();
+                    URL.revokeObjectURL(url);
+                } catch (e) {
+                    if (typeof UI !== 'undefined') UI.toast(`Export failed: ${e.message}`, 'error');
+                }
+                break;
+            }
            case 'clipboard': {
                try {
                    await navigator.clipboard.writeText(content);
--- a/src/js/projects-ui.js
+++ b/src/js/projects-ui.js
@@ -409,6 +409,26 @@ function _registerProjectPanel() {
                </div>
                <div class="project-panel-hint">Workspace files are available to AI in all project chats. Enables the Editor surface.</div>
            </div>
+            <div class="project-panel-section" id="projectGitSection" style="display:none">
+                <label class="project-panel-label">Git Settings</label>
+                <div style="display:flex;flex-direction:column;gap:6px">
+                    <input type="text" id="projectGitRemote" class="project-panel-input" placeholder="Git remote URL (https://...)" spellcheck="false">
+                    <input type="text" id="projectGitBranch" class="project-panel-input" placeholder="Branch (default: main)" spellcheck="false">
+                    <select id="projectGitCredential" class="project-panel-select">
+                        <option value="">No credential</option>
+                    </select>
+                    <button class="btn-small" id="projectGitSave">Save Git Config</button>
+                </div>
+                <div class="project-panel-hint">Configure git remote to sync workspace files with a repository.</div>
+            </div>
+            <div class="project-panel-section" id="projectFilesSection">
+                <label class="project-panel-label">Project Files</label>
+                <div id="projectFileList" class="project-panel-list"></div>
+                <div style="margin-top:6px">
+                    <input type="file" id="projectFileInput" style="display:none" multiple>
+                    <button class="btn-small" id="projectFileUploadBtn">Upload File</button>
+                </div>
+            </div>
            <div class="project-panel-section project-panel-footer">
                <label class="project-panel-checkbox">
                    <input type="checkbox" id="projectArchiveToggle">
@@ -434,6 +454,15 @@ function _registerProjectPanel() {
    el.querySelector('#projectWsSelect').addEventListener('change', _saveProjectWorkspace);
    el.querySelector('#projectWsCreate').addEventListener('click', _createProjectWorkspace);

+    // Wire git settings (v0.22.4)
+    el.querySelector('#projectGitSave').addEventListener('click', _saveProjectGitConfig);
+
+    // Wire project files (v0.22.4)
+    el.querySelector('#projectFileUploadBtn').addEventListener('click', () => {
+        document.getElementById('projectFileInput').click();
+    });
+    el.querySelector('#projectFileInput').addEventListener('change', _handleProjectFileUpload);
+
    PanelRegistry.register('project', {
        element: el,
        label: 'Project',
@@ -481,6 +510,12 @@ async function _loadProjectPanel(projectId) {

    // Load workspace picker (v0.21.5)
    await _renderProjectWorkspace(projectId);
+
+    // Load git settings (v0.22.4) — depends on workspace being loaded
+    await _renderProjectGitSettings(projectId);
+
+    // Load project files (v0.22.4)
+    await _renderProjectFiles(projectId);
 }

 async function _saveProjectPrompt() {
@@ -700,6 +735,8 @@ async function _saveProjectWorkspace() {
        UI.toast(wsId ? 'Workspace linked' : 'Workspace unlinked', 'success');
        // Trigger editor surface check
        if (typeof EditorMode !== 'undefined') EditorMode.check();
+        // Refresh git settings (v0.22.4)
+        await _renderProjectGitSettings(_projectPanelId);
    } catch (e) {
        UI.toast('Failed to update workspace', 'error');
    }
@@ -731,6 +768,106 @@ async function _createProjectWorkspace() {

 // ── Channel workspace picker (v0.21.5) ───────

+// ── Workspace Git Config (v0.22.4) ───────────
+
+async function _renderProjectGitSettings(projectId) {
+    const gitSection = document.getElementById('projectGitSection');
+    const wsId = document.getElementById('projectWsSelect')?.value;
+    if (!wsId) {
+        gitSection.style.display = 'none';
+        return;
+    }
+    gitSection.style.display = '';
+
+    try {
+        const ws = await API.getWorkspace(wsId);
+        document.getElementById('projectGitRemote').value = ws.git_remote_url || '';
+        document.getElementById('projectGitBranch').value = ws.git_branch || '';
+
+        // Load git credentials
+        const credSel = document.getElementById('projectGitCredential');
+        credSel.innerHTML = '<option value="">No credential</option>';
+        try {
+            const creds = await API.listGitCredentials();
+            const list = Array.isArray(creds) ? creds : (creds?.data || []);
+            for (const c of list) {
+                const opt = document.createElement('option');
+                opt.value = c.id;
+                opt.textContent = c.name || c.id.slice(0, 8);
+                if (c.id === ws.git_credential_id) opt.selected = true;
+                credSel.appendChild(opt);
+            }
+        } catch (_) {}
+    } catch (_) {
+        gitSection.style.display = 'none';
+    }
+}
+
+async function _saveProjectGitConfig() {
+    const wsId = document.getElementById('projectWsSelect')?.value;
+    if (!wsId) return;
+
+    const remote = document.getElementById('projectGitRemote').value.trim();
+    const branch = document.getElementById('projectGitBranch').value.trim() || null;
+    const credId = document.getElementById('projectGitCredential').value || null;
+
+    try {
+        await API.updateWorkspace(wsId, {
+            git_remote_url: remote || null,
+            git_branch: branch,
+            git_credential_id: credId,
+        });
+        UI.toast('Git config saved', 'success');
+    } catch (e) {
+        UI.toast('Failed to save git config: ' + (e.message || e), 'error');
+    }
+}
+
+// ── Project Files (v0.22.4) ──────────────────
+
+async function _renderProjectFiles(projectId) {
+    const list = document.getElementById('projectFileList');
+    if (!list) return;
+
+    try {
+        const resp = await API.projectListFiles(projectId);
+        const files = resp?.files || [];
+        if (!files.length) {
+            list.innerHTML = '<div class="project-panel-empty">No files uploaded</div>';
+            return;
+        }
+        list.innerHTML = files.map(f => {
+            const size = f.size_bytes > 1024 * 1024
+                ? (f.size_bytes / 1024 / 1024).toFixed(1) + ' MB'
+                : (f.size_bytes / 1024).toFixed(1) + ' KB';
+            return `<div class="project-panel-item" style="display:flex;justify-content:space-between;align-items:center">
+                <span title="${esc(f.filename)}">${esc(f.filename)}</span>
+                <span class="text-muted" style="font-size:11px">${size}</span>
+            </div>`;
+        }).join('');
+    } catch (e) {
+        list.innerHTML = '<div class="project-panel-empty">Failed to load files</div>';
+    }
+}
+
+async function _handleProjectFileUpload() {
+    const input = document.getElementById('projectFileInput');
+    if (!input.files?.length || !_projectPanelId) return;
+
+    for (const file of input.files) {
+        try {
+            await API.projectUploadFile(_projectPanelId, file);
+            UI.toast(`Uploaded ${file.name}`, 'success');
+        } catch (e) {
+            UI.toast(`Upload failed: ${e.message || e}`, 'error');
+        }
+    }
+    input.value = '';
+    await _renderProjectFiles(_projectPanelId);
+}
+
+
+
 async function showWorkspacePicker(chatId) {
    let workspaces = [];
    try {
--- a/src/js/ui-admin.js
+++ b/src/js/ui-admin.js
@@ -929,6 +929,10 @@ Object.assign(UI, {
                                <span class="admin-storage-label">Timeouts</span>
                                <span class="admin-storage-value">${p.timeout_count ?? 0}</span>
                            </div>
+                            <div class="admin-storage-item">
+                                <span class="admin-storage-label">Rate Limits</span>
+                                <span class="admin-storage-value" style="color:${(p.rate_limit_count || 0) > 0 ? 'var(--warning)' : 'inherit'}">${p.rate_limit_count ?? 0}</span>
+                            </div>
                            <div class="admin-storage-item">
                                <span class="admin-storage-label">Max Latency</span>
                                <span class="admin-storage-value">${p.max_latency_ms ?? 0}ms</span>
@@ -1 +1 @@
 .22.3
 .22.4