Feat v0.5.4 package updates (#34)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

CHANGELOG.md

@@ -2,6 +2,41 @@
 
 All notable changes to Switchboard Core are documented here.
 
+## v0.5.4 — Package Updates
+
+### Added
+
+- **Package update API**: `POST /api/v1/admin/packages/:id/update` accepts a
+  `.pkg` archive, validates semver version bump (rejects same/older), applies
+  additive schema migration, merges settings, replaces assets, and re-syncs
+  permissions/triggers/dependencies.
+- **Package export API**: `GET /api/v1/admin/packages/:id/export` streams the
+  installed package as a downloadable `.pkg` ZIP archive. Completes the manual
+  rollback story: export before update, re-install old `.pkg` if needed.
+- **Semver parsing**: `ParseSemver` / `Compare` in `handlers/semver.go` with
+  prerelease support. Used by the update handler to enforce version bumps.
+- **Additive schema migration**: `MigrateExtTables` diffs declared `db_tables`
+  against existing ext_data schema. Adds new columns (`ALTER TABLE ADD COLUMN`)
+  and new tables. No destructive changes — columns in DB but absent from
+  manifest are preserved. `ListExtColumns` introspects via `PRAGMA table_info`
+  (SQLite) or `information_schema` (Postgres).
+- **Settings merge on update**: New manifest setting keys get their declared
+  default value; existing admin-configured values are preserved.
+- **Admin UI Update button**: Non-core package cards now show an Update button
+  with a confirm dialog before upload.
+- **14 new Go tests**: Version bump, 5 rejection cases (same/older/core/type/id
+  mismatch), schema add column with data preservation, schema add table,
+  settings merge, export with valid zip, default allowlist, wildcard allowlist.
+
+### Changed
+
+- **Curated default bundle**: Default bundled packages reduced from 23 to 8
+  core packages (notes, chat-core, workflow-chat, dashboard, 4 demo workflows).
+  `BUNDLED_PACKAGES=*` installs all; explicit comma-separated list for custom.
+  Existing deployments are unaffected (install-once, skip-if-present).
+- **`BUNDLED_PACKAGES` env var**: Empty value now installs curated defaults
+  instead of all packages. Use `"*"` for previous install-all behavior.
+
 ## v0.5.3 — Chat Polish + Integration Testing
 
 ### Added

ROADMAP.md

@@ -389,16 +389,17 @@ participation is post-MVP.
 | "Requires Review" filter | Dropdown filter option or dedicated button for `pending_review` packages. Useful when the package list grows long. |
 | Extreme UI scale polish | At 150%+ scale: user menu items overflow viewport (need scroll), topbar elements clipped. Ensure all surfaces and menus are usable at scale extremes (80%–200%). |
 
-### v0.5.4 — Package Updates (planned)
+### v0.5.4 — Package Updates
 
 | Step | Status | Description |
 |------|--------|-------------|
-| Version comparison | | Compare installed package version against incoming `.pkg` version. Semantic version parsing. Skip if same or older. |
-| Schema migration on update | | Diff declared `db_tables` against existing ext_data schema. Add new columns, add new tables. No destructive changes (no column drops, no type changes). |
-| Data preservation | | ext_data tables survive update. Only additive schema changes applied. Settings merged (new keys added, existing preserved). |
-| Update API | | `PUT /api/v1/packages/:id/update` — accepts `.pkg` archive, validates version bump, applies schema diff, replaces code (JS/CSS/Starlark). |
-| Admin UI | | Update button on package card when newer version available. Version comparison badge. Update confirmation via `sw.ui.Confirm`. |
-| Rollback story | | Export package before update (existing export). Document manual rollback: re-install old `.pkg`. No automatic rollback — KISS. |
+| Curate bundled packages | ✅ | Default set reduced from 23 to 8 core packages. `BUNDLED_PACKAGES=*` for all; explicit list for custom. |
+| Version comparison | ✅ | Semver parsing (`ParseSemver`) with prerelease support. Version bump validated on update. |
+| Schema migration on update | ✅ | `MigrateExtTables` diffs `db_tables` against existing schema. Adds new columns/tables. No destructive changes. |
+| Data preservation | ✅ | ext_data tables survive update. Settings merged (new keys added with defaults, existing preserved). |
+| Update API | ✅ | `POST /api/v1/admin/packages/:id/update` — accepts `.pkg` archive, validates version bump, applies schema diff, replaces code. |
+| Admin UI | ✅ | Update button on non-core package cards. Confirm dialog before upload. |
+| Export API | ✅ | `GET /api/v1/admin/packages/:id/export` — streams installed package as .pkg ZIP. Manual rollback: export → update → re-install old .pkg if needed. |
 
 ### v0.5.5 — Upgrade Testing (planned)
 

VERSION

@@ -1 +1 @@
-0.5.3
+0.5.4

docs/DISTRIBUTION.md

@@ -14,42 +14,66 @@ On first run, bundled packages are automatically installed — workflows, surfac
 
 ## Bundled Packages
 
-The production Docker image ships with pre-built packages that are auto-installed on first boot:
+The production Docker image ships with pre-built packages. A **curated default set** is auto-installed on first boot; additional packages ship in the image and can be opted-in via `BUNDLED_PACKAGES`.
+
+#### Default Set (auto-installed)
 
 | Package | Type | Description |
 |---------|------|-------------|
+| notes | surface | Markdown notes with graph view |
+| chat-core | library | Conversations, messages, read cursors |
+| workflow-chat | extension | Chat integration for workflow stages |
+| dashboard | surface | Dashboard surface |
+| workflow-demo | surface | Interactive walkthrough with diagrams |
 | bug-report-triage | workflow | Public entry, severity routing, SLA timers |
 | content-approval | workflow | Multi-party signoff example |
 | employee-onboarding | workflow | Automated provisioning + manager signoff |
-| webhook-notifier | workflow | HTTP outbound via connections + Starlark |
-| workflow-demo | surface | Interactive walkthrough with diagrams |
-| hello-dashboard | surface | Welcome/getting started surface |
-| schedules | surface | Cron task management UI |
+
+#### Opt-in (ship in image, require `BUNDLED_PACKAGES` to enable)
+
+| Package | Type | Description |
+|---------|------|-------------|
 | tasks | full | Kanban/list task manager with webhooks |
+| schedules | surface | Cron task management UI |
+| editor | surface | Rich markdown editor |
+| hello-dashboard | surface | Welcome/getting started surface |
 | team-activity-log | surface | Team activity feed |
+| webhook-notifier | workflow | HTTP outbound via connections + Starlark |
+| csv-table | extension | CSV table renderer |
+| diff-viewer | extension | Diff visualization |
+| git-board | surface | Git board interface |
 | gitea-client | library | Gitea API integration library |
+| js-sandbox | extension | JavaScript sandbox |
+| katex-renderer | extension | LaTeX rendering |
+| mermaid-renderer | extension | Diagram rendering |
+| regex-tester | extension | Regex testing tool |
 | icd-test-runner | surface | E2E API test suite |
 | sdk-test-runner | surface | SDK feature test suite |
 
 ### Behavior
 
-- **First boot**: All bundled packages are installed and enabled automatically.
+- **First boot**: Curated default packages are installed and enabled automatically.
 - **Subsequent boots**: No-op — already-installed packages are skipped.
 - **Admin uninstalls a package**: It stays uninstalled. Bundled packages are never force-reinstalled.
 - **To re-install**: Delete the package from the database, then restart the container.
 
 ### Selecting Packages (Allowlist)
 
-Set `BUNDLED_PACKAGES` to a comma-separated list of package IDs to install only a subset:
+Set `BUNDLED_PACKAGES` to control which packages are installed:
 
 ```bash
-# K8s / Helm — install only core surfaces, no demo/test packages
+# Install ALL packages (everything in the image)
 docker run -p 8080:80 \
-  -e BUNDLED_PACKAGES="tasks,schedules,hello-dashboard" \
+  -e BUNDLED_PACKAGES="*" \
+  ghcr.io/switchboard-core/switchboard-core:latest
+
+# Install specific packages only
+docker run -p 8080:80 \
+  -e BUNDLED_PACKAGES="notes,tasks,schedules" \
   ghcr.io/switchboard-core/switchboard-core:latest
 ```
 
-Empty (default) means install all bundled packages. This is useful for Helm charts where different environments need different packages.
+Empty (default) installs the curated default set. Use `*` to install all packages. This is useful for Helm charts where different environments need different packages.
 
 ### Disabling Auto-Install
 
@@ -149,7 +173,7 @@ docker build -t my-switchboard .
 | `STORAGE_PATH` | `/data/storage` | PVC mount point |
 | `BASE_PATH` | | URL prefix (e.g. `/switchboard`) |
 | `SKIP_BUNDLED_PACKAGES` | `false` | Disable auto-install of bundled packages |
-| `BUNDLED_PACKAGES` | (empty = all) | Comma-separated allowlist of package IDs to install |
+| `BUNDLED_PACKAGES` | (empty = defaults) | `""` curated defaults, `"*"` all, or comma-separated IDs |
 | `BUNDLED_PACKAGES_DIR` | `/app/bundled-packages` | Override bundled packages location |
 | `LOG_FORMAT` | `text` | `text` or `json` |
 | `LOG_LEVEL` | `info` | `debug`, `info`, `warn`, `error` |

server/config/config.go

@@ -63,11 +63,13 @@ type Config struct {
 	MTLSAutoActivate      bool   // auto-activate new users (default true)
 	MTLSDefaultTeam       string // team ID for auto-provisioned users (optional)
 
-	// Bundled packages (v0.3.8)
+	// Bundled packages (v0.3.8, curated v0.5.4)
 	// SKIP_BUNDLED_PACKAGES: set true to disable auto-install of bundled packages on first run.
 	// BUNDLED_PACKAGES_DIR: directory containing pre-built .pkg archives (default /app/bundled-packages).
-	// BUNDLED_PACKAGES: comma-separated allowlist of package IDs to install (empty = all).
-	//   e.g. "tasks,schedules,hello-dashboard" installs only those three.
+	// BUNDLED_PACKAGES: controls which bundled packages are auto-installed:
+	//   empty  → curated default set (notes, chat-core, workflow-chat, dashboard, demo workflows)
+	//   "*"    → install all .pkg archives found in the directory
+	//   "a,b"  → comma-separated allowlist of specific package IDs
 	SkipBundledPackages bool
 	BundledPackagesDir  string
 	BundledPackages     string

server/handlers/ext_db_schema.go

@@ -186,6 +186,130 @@ func CreateExtTables(
 	return nil
 }
 
+// ListExtColumns returns the set of column names for a physical table.
+// Uses PRAGMA table_info on SQLite and information_schema on Postgres.
+func ListExtColumns(ctx context.Context, db *sql.DB, isPostgres bool, physicalTable string) (map[string]bool, error) {
+	cols := make(map[string]bool)
+
+	var rows *sql.Rows
+	var err error
+	if isPostgres {
+		rows, err = db.QueryContext(ctx,
+			`SELECT column_name FROM information_schema.columns WHERE table_name = $1 AND table_schema = 'public'`,
+			physicalTable)
+	} else {
+		rows, err = db.QueryContext(ctx, fmt.Sprintf("PRAGMA table_info(%s)", physicalTable))
+	}
+	if err != nil {
+		return nil, fmt.Errorf("list columns for %s: %w", physicalTable, err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		if isPostgres {
+			var name string
+			if err := rows.Scan(&name); err != nil {
+				continue
+			}
+			cols[name] = true
+		} else {
+			// PRAGMA table_info returns: cid, name, type, notnull, dflt_value, pk
+			var cid int
+			var name, colType string
+			var notnull int
+			var dfltValue sql.NullString
+			var pk int
+			if err := rows.Scan(&cid, &name, &colType, &notnull, &dfltValue, &pk); err != nil {
+				continue
+			}
+			cols[name] = true
+		}
+	}
+	return cols, rows.Err()
+}
+
+// MigrateExtTables applies additive-only schema changes for a package update.
+// For each table in the new manifest:
+//   - New table: CREATE TABLE (full creation, same as CreateExtTables)
+//   - Existing table: ALTER TABLE ADD COLUMN for each new column
+//
+// Indexes are applied idempotently with CREATE INDEX IF NOT EXISTS.
+// New tables are registered in the ext_data_tables catalog.
+// Returns a log of changes applied (for API response).
+//
+// No destructive changes: columns present in DB but absent from manifest are NOT dropped.
+func MigrateExtTables(
+	ctx context.Context,
+	db *sql.DB,
+	isPostgres bool,
+	stores store.Stores,
+	packageID string,
+	newTables map[string]TableDef,
+) ([]string, error) {
+	if db == nil {
+		return nil, nil
+	}
+
+	// Get existing registered tables for this package
+	existingTableNames := make(map[string]bool)
+	if stores.ExtData != nil {
+		names, err := stores.ExtData.ListTables(ctx, packageID)
+		if err != nil {
+			return nil, fmt.Errorf("list existing tables for %s: %w", packageID, err)
+		}
+		for _, n := range names {
+			existingTableNames[n] = true
+		}
+	}
+
+	var changes []string
+
+	for logicalName, td := range newTables {
+		physical := extPhysicalTable(packageID, logicalName)
+
+		if !existingTableNames[logicalName] {
+			// New table — full creation
+			if err := CreateExtTables(ctx, db, isPostgres, stores, packageID,
+				map[string]TableDef{logicalName: td}); err != nil {
+				return changes, fmt.Errorf("create new table %s: %w", physical, err)
+			}
+			changes = append(changes, fmt.Sprintf("created table %s", physical))
+			continue
+		}
+
+		// Existing table — diff columns and add missing ones
+		existingCols, err := ListExtColumns(ctx, db, isPostgres, physical)
+		if err != nil {
+			return changes, err
+		}
+
+		for col, typ := range td.Columns {
+			if existingCols[col] {
+				continue
+			}
+			sqlType := mapColType(typ, isPostgres)
+			alterDDL := fmt.Sprintf("ALTER TABLE %s ADD COLUMN %s %s", physical, col, sqlType)
+			if _, err := db.ExecContext(ctx, alterDDL); err != nil {
+				return changes, fmt.Errorf("add column %s.%s: %w", physical, col, err)
+			}
+			changes = append(changes, fmt.Sprintf("added column '%s' to %s", col, physical))
+			log.Printf("[ext-db] added column %s (%s) to %s", col, sqlType, physical)
+		}
+
+		// Re-apply indexes idempotently
+		for i, idxCols := range td.Indexes {
+			idxName := fmt.Sprintf("idx_%s_%d", physical, i)
+			idxDDL := fmt.Sprintf("CREATE INDEX IF NOT EXISTS %s ON %s (%s)",
+				idxName, physical, strings.Join(idxCols, ", "))
+			if _, err := db.ExecContext(ctx, idxDDL); err != nil {
+				log.Printf("[ext-db] index create failed (%s): %v", idxName, err)
+			}
+		}
+	}
+
+	return changes, nil
+}
+
 // DropExtTables drops all physical tables registered for a package and removes
 // their entries from the ext_data_tables catalog.
 //

server/handlers/packages.go

@@ -897,3 +897,343 @@ func (h *PackageHandler) TestTool(c *gin.Context) {
 		"output": output,
 	})
 }
+
+// ── Package update (v0.5.4) ──────────────────────
+
+// UpdatePackage applies an in-place update to an existing package.
+// POST /api/v1/admin/packages/:id/update
+//
+// Validates version bump (semver), applies additive schema migration,
+// merges settings, replaces assets, and re-syncs permissions/triggers.
+func (h *PackageHandler) UpdatePackage(c *gin.Context) {
+	ctx := c.Request.Context()
+	pkgID := c.Param("id")
+
+	// 1. Lookup existing package
+	existing, err := h.stores.Packages.Get(ctx, pkgID)
+	if err != nil || existing == nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "package not found"})
+		return
+	}
+	if existing.Source == "core" {
+		c.JSON(http.StatusForbidden, gin.H{"error": "cannot update core packages"})
+		return
+	}
+
+	// 2. Accept file upload
+	file, header, err := c.Request.FormFile("file")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no file uploaded"})
+		return
+	}
+	defer file.Close()
+
+	validExt := strings.HasSuffix(header.Filename, ".pkg") ||
+		strings.HasSuffix(header.Filename, ".surface") ||
+		strings.HasSuffix(header.Filename, ".zip")
+	if !validExt {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "file must be a .pkg, .surface, or .zip archive"})
+		return
+	}
+	if header.Size > 50*1024*1024 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "archive too large (max 50MB)"})
+		return
+	}
+
+	tmpFile, err := os.CreateTemp("", "package-update-*.zip")
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create temp file"})
+		return
+	}
+	tmpPath := tmpFile.Name()
+	defer os.Remove(tmpPath)
+
+	if _, err := io.Copy(tmpFile, file); err != nil {
+		tmpFile.Close()
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to read upload"})
+		return
+	}
+	tmpFile.Close()
+
+	zr, err := zip.OpenReader(tmpPath)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid zip archive"})
+		return
+	}
+	defer zr.Close()
+
+	// 3. Extract and validate manifest
+	manifest, err := extractManifest(zr)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	newID, _ := manifest["id"].(string)
+	if newID != pkgID {
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("manifest id %q does not match package %q", newID, pkgID)})
+		return
+	}
+
+	newType, _ := manifest["type"].(string)
+	if newType == "" {
+		newType = "surface"
+	}
+	if newType != existing.Type {
+		c.JSON(http.StatusBadRequest, gin.H{"error": fmt.Sprintf("cannot change package type from %q to %q", existing.Type, newType)})
+		return
+	}
+
+	// 4. Version comparison — reject same or older
+	newVersion, _ := manifest["version"].(string)
+	if newVersion == "" {
+		newVersion = "0.0.0"
+	}
+	oldSemver, errOld := ParseSemver(existing.Version)
+	newSemver, errNew := ParseSemver(newVersion)
+	if errOld != nil || errNew != nil {
+		// If either version is unparseable, allow the update (legacy data)
+		if errNew != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid version in manifest: " + errNew.Error()})
+			return
+		}
+	} else if newSemver.Compare(oldSemver) <= 0 {
+		c.JSON(http.StatusConflict, gin.H{
+			"error": fmt.Sprintf("version %s is not newer than installed %s", newVersion, existing.Version),
+		})
+		return
+	}
+
+	// 5. Unicode security scan
+	scanExts := map[string]bool{".star": true, ".json": true, ".js": true, ".html": true}
+	for _, f := range zr.File {
+		if f.FileInfo().IsDir() {
+			continue
+		}
+		ext := strings.ToLower(filepath.Ext(f.Name))
+		if !scanExts[ext] {
+			continue
+		}
+		rc, err := f.Open()
+		if err != nil {
+			continue
+		}
+		data, err := io.ReadAll(rc)
+		rc.Close()
+		if err != nil {
+			continue
+		}
+		findings := sandbox.ScanSource(string(data), f.Name)
+		if len(findings) > 0 {
+			if blocked, reason := sandbox.Verdict(findings); blocked {
+				c.JSON(http.StatusUnprocessableEntity, gin.H{
+					"error":  "extension_blocked",
+					"reason": fmt.Sprintf("%s (file: %s)", reason, f.Name),
+				})
+				return
+			}
+		}
+	}
+
+	// 6. Additive schema migration
+	var schemaChanges []string
+	if tables, ok := ParseDBTables(manifest); ok {
+		changes, err := MigrateExtTables(ctx, database.DB, database.IsPostgres(), h.stores, pkgID, tables)
+		if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "schema migration failed: " + err.Error()})
+			return
+		}
+		schemaChanges = changes
+	}
+
+	// 7. Settings merge — add new keys with defaults, preserve existing
+	mergedSettings := mergePackageSettings(existing, manifest)
+	if mergedSettings != nil {
+		if err := h.stores.Packages.SetPackageSettings(ctx, pkgID, mergedSettings); err != nil {
+			log.Printf("[packages] settings merge failed for %s: %v", pkgID, err)
+		}
+	}
+
+	// 8. Replace assets
+	if h.packagesDir != "" {
+		if err := extractPackageAssets(zr, h.packagesDir, pkgID); err != nil {
+			log.Printf("[packages] asset extraction failed for %s: %v", pkgID, err)
+		}
+	}
+
+	// 9. Update DB record
+	description, _ := manifest["description"].(string)
+	author, _ := manifest["author"].(string)
+	tier, _ := manifest["tier"].(string)
+	if tier == "" {
+		tier = "browser"
+	}
+
+	pkg := &store.PackageRegistration{
+		Title:       manifest["title"].(string),
+		Type:        newType,
+		Version:     newVersion,
+		Description: description,
+		Author:      author,
+		Tier:        tier,
+		IsSystem:    existing.IsSystem,
+		Enabled:     existing.Enabled,
+		Manifest:    manifest,
+	}
+	if err := h.stores.Packages.Update(ctx, pkgID, pkg); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to update package record"})
+		return
+	}
+
+	// 10. Re-sync permissions, triggers, dependencies
+	SyncManifestPermissions(c, h.stores, pkgID, manifest)
+	SyncManifestTriggers(ctx, h.stores, triggers.GlobalEngine(), pkgID, manifest)
+
+	if deps, ok := manifest["dependencies"].(map[string]any); ok && len(deps) > 0 {
+		if h.stores.Dependencies != nil {
+			h.stores.Dependencies.DeleteAllForConsumer(ctx, pkgID)
+		}
+		for libID, vSpec := range deps {
+			lib, err := h.stores.Packages.Get(ctx, libID)
+			if err != nil || lib == nil {
+				log.Printf("[packages] update dependency %s not found for %s", libID, pkgID)
+				continue
+			}
+			versionSpec, _ := vSpec.(string)
+			if versionSpec == "" {
+				versionSpec = ">=0.0.0"
+			}
+			if h.stores.Dependencies != nil {
+				h.stores.Dependencies.Create(ctx, &models.ExtDependency{
+					ConsumerID:  pkgID,
+					LibraryID:   libID,
+					VersionSpec: versionSpec,
+					ResolvedVer: lib.Version,
+				})
+			}
+		}
+	}
+
+	// 11. Re-install workflow definition if applicable
+	if newType == "workflow" {
+		if err := InstallWorkflowFromManifest(c, h.stores, pkgID, manifest); err != nil {
+			log.Printf("[packages] workflow update failed for %s: %v", pkgID, err)
+		}
+	}
+
+	previousVersion := existing.Version
+	log.Printf("[packages] Updated %s from v%s to v%s", pkgID, previousVersion, newVersion)
+
+	c.JSON(http.StatusOK, gin.H{
+		"id":               pkgID,
+		"version":          newVersion,
+		"previous_version": previousVersion,
+		"changes":          schemaChanges,
+	})
+}
+
+// mergePackageSettings merges existing settings with a new manifest's settings schema.
+// New keys get their declared default value; existing keys are preserved.
+func mergePackageSettings(existing *store.PackageRegistration, manifest map[string]any) json.RawMessage {
+	newSchema, _ := manifest["settings"].([]any)
+	if len(newSchema) == 0 {
+		return nil
+	}
+
+	// Parse existing settings
+	var current map[string]any
+	if existing.PackageSettings != nil {
+		if err := json.Unmarshal(existing.PackageSettings, &current); err != nil {
+			current = make(map[string]any)
+		}
+	}
+	if current == nil {
+		current = make(map[string]any)
+	}
+
+	changed := false
+	for _, entry := range newSchema {
+		e, ok := entry.(map[string]any)
+		if !ok {
+			continue
+		}
+		key, _ := e["key"].(string)
+		if key == "" {
+			continue
+		}
+		if _, exists := current[key]; !exists {
+			current[key] = e["default"]
+			changed = true
+		}
+	}
+
+	if !changed {
+		return nil
+	}
+
+	data, _ := json.Marshal(current)
+	return data
+}
+
+// ── Package export (v0.5.4) ──────────────────────
+
+// ExportPackage exports an installed package as a downloadable .pkg archive.
+// GET /api/v1/admin/packages/:id/export
+func (h *PackageHandler) ExportPackage(c *gin.Context) {
+	ctx := c.Request.Context()
+	pkgID := c.Param("id")
+
+	pkg, err := h.stores.Packages.Get(ctx, pkgID)
+	if err != nil || pkg == nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "package not found"})
+		return
+	}
+
+	// Set response headers
+	filename := fmt.Sprintf("%s-%s.pkg", pkgID, pkg.Version)
+	c.Header("Content-Type", "application/zip")
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=%q", filename))
+
+	zw := zip.NewWriter(c.Writer)
+	defer zw.Close()
+
+	// Write manifest.json from DB
+	manifestJSON, err := json.MarshalIndent(pkg.Manifest, "", "  ")
+	if err != nil {
+		log.Printf("[packages] export: failed to marshal manifest for %s: %v", pkgID, err)
+		return
+	}
+	mw, err := zw.Create("manifest.json")
+	if err != nil {
+		return
+	}
+	mw.Write(manifestJSON)
+
+	// Walk packagesDir/{id}/ and add all asset files
+	if h.packagesDir == "" {
+		return
+	}
+	pkgDir := filepath.Join(h.packagesDir, pkgID)
+	filepath.Walk(pkgDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil || info.IsDir() {
+			return nil
+		}
+		relPath, err := filepath.Rel(pkgDir, path)
+		if err != nil {
+			return nil
+		}
+		relPath = filepath.ToSlash(relPath) // normalize to forward slashes in zip
+
+		fw, err := zw.Create(relPath)
+		if err != nil {
+			return nil
+		}
+		f, err := os.Open(path)
+		if err != nil {
+			return nil
+		}
+		defer f.Close()
+		io.Copy(fw, f)
+		return nil
+	})
+}

server/handlers/packages_bundled.go

@@ -22,13 +22,28 @@ import (
 	"switchboard-core/triggers"
 )
 
+// defaultBundledPackages is the curated set of packages installed by default.
+// Other packages still ship in the Docker image but require BUNDLED_PACKAGES
+// to be set explicitly (or "*" for all).
+var defaultBundledPackages = map[string]bool{
+	"notes":                 true,
+	"chat-core":             true,
+	"workflow-chat":         true,
+	"dashboard":             true,
+	"workflow-demo":         true,
+	"bug-report-triage":     true,
+	"content-approval":      true,
+	"employee-onboarding":   true,
+}
+
 // InstallBundledPackages scans bundledDir for .pkg archives and installs
 // any that don't already exist in the database. Called once at startup
 // (unless SKIP_BUNDLED_PACKAGES=true).
 //
-// allowlist is an optional comma-separated list of package IDs to install.
-// Empty string means install all. This allows Helm/K8s deployments to
-// select a subset: e.g. "tasks,schedules,hello-dashboard".
+// allowlist controls which packages are installed:
+//   - Empty string → install the curated default set (see defaultBundledPackages)
+//   - "*" → install all .pkg archives found in the directory
+//   - Comma-separated IDs → install only those (e.g. "tasks,schedules")
 //
 // Design: install-once, skip-if-present. If an admin uninstalls a bundled
 // package, it won't be re-installed on the next restart.
@@ -43,11 +58,15 @@ func InstallBundledPackages(bundledDir, packagesDir, allowlist string, stores st
 		return
 	}
 
-	// Parse allowlist into a set (empty = allow all)
+	// Parse allowlist: "" → curated defaults, "*" → all, "a,b" → explicit list
 	allowed := parseBundleAllowlist(allowlist)
-	if len(allowed) > 0 {
+	if allowed != nil {
+		if allowlist == "" || allowlist == " " {
+			log.Printf("[bundled] Using curated default set (%d packages)", len(defaultBundledPackages))
+		} else {
 			log.Printf("[bundled] Allowlist: %v", allowlist)
 		}
+	}
 
 	var installed, skipped, filtered int
 	for _, entry := range entries {
@@ -87,10 +106,16 @@ func InstallBundledPackages(bundledDir, packagesDir, allowlist string, stores st
 }
 
 // parseBundleAllowlist parses a comma-separated string into a set of
-// package IDs. Returns nil for empty input (meaning "allow all").
+// package IDs. Returns:
+//   - nil for "*" input (meaning "install all")
+//   - defaultBundledPackages for empty input
+//   - explicit set for comma-separated list
 func parseBundleAllowlist(s string) map[string]bool {
 	s = strings.TrimSpace(s)
 	if s == "" {
+		return defaultBundledPackages
+	}
+	if s == "*" {
 		return nil
 	}
 	parts := strings.Split(s, ",")

server/handlers/packages_bundled_test.go

@@ -88,7 +88,7 @@ func TestBundledInstall_FreshDB(t *testing.T) {
 		"route": "/s/test-b",
 	})
 
-	InstallBundledPackages(bundledDir, packagesDir, "", stores, nil)
+	InstallBundledPackages(bundledDir, packagesDir, "*", stores, nil)
 
 	// Both packages should be installed and enabled
 	for _, id := range []string{"test-surface-a", "test-surface-b"} {
@@ -127,7 +127,7 @@ func TestBundledInstall_SkipsExisting(t *testing.T) {
 		"type":  "surface",
 	})
 
-	InstallBundledPackages(bundledDir, packagesDir, "", stores, nil)
+	InstallBundledPackages(bundledDir, packagesDir, "*", stores, nil)
 
 	// Package should retain original title (not overwritten)
 	pkg, err := stores.Packages.Get(ctx, "pre-existing")
@@ -174,7 +174,7 @@ func TestBundledInstall_DormantPackage(t *testing.T) {
 		"requires": []string{"chat"},
 	})
 
-	InstallBundledPackages(bundledDir, packagesDir, "", stores, nil)
+	InstallBundledPackages(bundledDir, packagesDir, "*", stores, nil)
 
 	pkg, err := stores.Packages.Get(ctx, "dormant-pkg")
 	if err != nil || pkg == nil {

server/handlers/packages_update_test.go

@@ -0,0 +1,494 @@
+package handlers
+
+import (
+	"archive/zip"
+	"bytes"
+	"context"
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+
+	"switchboard-core/database"
+	"switchboard-core/store"
+)
+
+// ── Helpers ────────────────────────────────────
+
+// buildPkgBytes creates a .pkg archive in memory and returns the ZIP bytes.
+func buildPkgBytes(t *testing.T, manifest map[string]any) []byte {
+	t.Helper()
+	var buf bytes.Buffer
+	zw := zip.NewWriter(&buf)
+	data, _ := json.Marshal(manifest)
+	w, _ := zw.Create("manifest.json")
+	w.Write(data)
+	zw.Close()
+	return buf.Bytes()
+}
+
+// seedPackage installs a package directly into the DB for testing.
+func seedPackage(t *testing.T, stores store.Stores, manifest map[string]any) {
+	t.Helper()
+	ctx := context.Background()
+	id := manifest["id"].(string)
+	title := manifest["title"].(string)
+	source := "extension"
+	if s, ok := manifest["source"].(string); ok {
+		source = s
+	}
+	if err := stores.Packages.Seed(ctx, id, title, source, manifest); err != nil {
+		t.Fatal(err)
+	}
+	version, _ := manifest["version"].(string)
+	if version == "" {
+		version = "0.0.0"
+	}
+	pkgType, _ := manifest["type"].(string)
+	if pkgType == "" {
+		pkgType = "surface"
+	}
+	tier, _ := manifest["tier"].(string)
+	if tier == "" {
+		tier = "browser"
+	}
+	pkg := &store.PackageRegistration{
+		Title:    title,
+		Type:     pkgType,
+		Version:  version,
+		Tier:     tier,
+		Enabled:  true,
+		Manifest: manifest,
+	}
+	if err := stores.Packages.Update(ctx, id, pkg); err != nil {
+		t.Fatalf("seedPackage Update failed for %s: %v", id, err)
+	}
+	// Verify version was actually stored
+	check, _ := stores.Packages.Get(ctx, id)
+	if check != nil && check.Version != version {
+		t.Fatalf("seedPackage: version not stored correctly for %s: got %q want %q", id, check.Version, version)
+	}
+}
+
+// setupUpdateRouter creates a gin router with the update and export routes.
+func setupUpdateRouter(t *testing.T, stores store.Stores) *gin.Engine {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	r := gin.New()
+	handler := NewPackageHandler(stores)
+	r.POST("/api/v1/admin/packages/:id/update", handler.UpdatePackage)
+	r.GET("/api/v1/admin/packages/:id/export", handler.ExportPackage)
+	return r
+}
+
+// doUpdate performs a multipart upload to the update endpoint.
+func doUpdate(router *gin.Engine, pkgID string, pkgBytes []byte) *httptest.ResponseRecorder {
+	body := &bytes.Buffer{}
+	writer := multipart.NewWriter(body)
+	part, _ := writer.CreateFormFile("file", "test.pkg")
+	part.Write(pkgBytes)
+	writer.Close()
+
+	req := httptest.NewRequest("POST", "/api/v1/admin/packages/"+pkgID+"/update", body)
+	req.Header.Set("Content-Type", writer.FormDataContentType())
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+	return w
+}
+
+// ── Tests ────────────────────────────────────
+
+func TestUpdatePackage_VersionBump(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	seedPackage(t, stores, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.1.0",
+	})
+
+	w := doUpdate(router, "test-pkg", pkg)
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	// Verify version updated
+	updated, _ := stores.Packages.Get(ctx, "test-pkg")
+	if updated.Version != "1.1.0" {
+		t.Errorf("version = %q, want %q", updated.Version, "1.1.0")
+	}
+
+	// Check response body
+	var resp map[string]any
+	json.Unmarshal(w.Body.Bytes(), &resp)
+	if resp["version"] != "1.1.0" {
+		t.Errorf("response version = %v, want 1.1.0", resp["version"])
+	}
+	if resp["previous_version"] != "1.0.0" {
+		t.Errorf("response previous_version = %v, want 1.0.0", resp["previous_version"])
+	}
+}
+
+func TestUpdatePackage_SameVersion_Rejected(t *testing.T) {
+	stores := newTestStores(t)
+
+	seedPackage(t, stores, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	w := doUpdate(router, "test-pkg", pkg)
+	if w.Code != http.StatusConflict {
+		t.Fatalf("expected 409, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_OlderVersion_Rejected(t *testing.T) {
+	stores := newTestStores(t)
+
+	seedPackage(t, stores, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "2.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	w := doUpdate(router, "test-pkg", pkg)
+	if w.Code != http.StatusConflict {
+		t.Fatalf("expected 409, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_CorePackage_Rejected(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	// Seed as core package
+	stores.Packages.Seed(ctx, "core-pkg", "Core", "core", map[string]any{
+		"id": "core-pkg", "title": "Core", "type": "surface",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "core-pkg", "title": "Core", "type": "surface", "version": "2.0.0",
+	})
+
+	w := doUpdate(router, "core-pkg", pkg)
+	if w.Code != http.StatusForbidden {
+		t.Fatalf("expected 403, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_TypeMismatch_Rejected(t *testing.T) {
+	stores := newTestStores(t)
+
+	seedPackage(t, stores, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "extension", "version": "2.0.0",
+		"tools": []any{map[string]any{"name": "test"}},
+	})
+
+	w := doUpdate(router, "test-pkg", pkg)
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected 400, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_IDMismatch_Rejected(t *testing.T) {
+	stores := newTestStores(t)
+
+	seedPackage(t, stores, map[string]any{
+		"id": "test-pkg", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "other-pkg", "title": "Other", "type": "surface", "version": "2.0.0",
+	})
+
+	w := doUpdate(router, "test-pkg", pkg)
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected 400, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_NotFound(t *testing.T) {
+	stores := newTestStores(t)
+
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "nonexistent", "title": "Test", "type": "surface", "version": "1.0.0",
+	})
+
+	w := doUpdate(router, "nonexistent", pkg)
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("expected 404, got %d: %s", w.Code, w.Body.String())
+	}
+}
+
+func TestUpdatePackage_SchemaAddColumn(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	// Install v1 with a table that has one column
+	seedPackage(t, stores, map[string]any{
+		"id": "schema-pkg", "title": "Schema Test", "type": "surface", "version": "1.0.0",
+		"db_tables": map[string]any{
+			"items": map[string]any{
+				"columns": map[string]any{"name": "text"},
+			},
+		},
+	})
+	// Actually create the table
+	tables, _ := ParseDBTables(map[string]any{
+		"db_tables": map[string]any{
+			"items": map[string]any{
+				"columns": map[string]any{"name": "text"},
+			},
+		},
+	})
+	CreateExtTables(ctx, database.TestDB, database.IsPostgres(), stores, "schema-pkg", tables)
+
+	// Insert a row to verify data preservation
+	physical := extPhysicalTable("schema-pkg", "items")
+	_, err := database.TestDB.ExecContext(ctx,
+		fmt.Sprintf("INSERT INTO %s (id, name) VALUES ('row1', 'hello')", physical))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Update to v2 with an added column
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "schema-pkg", "title": "Schema Test", "type": "surface", "version": "2.0.0",
+		"db_tables": map[string]any{
+			"items": map[string]any{
+				"columns": map[string]any{"name": "text", "priority": "int"},
+			},
+		},
+	})
+
+	w := doUpdate(router, "schema-pkg", pkg)
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	// Verify new column exists and old data preserved
+	var name string
+	var priority sql.NullInt64
+	err = database.TestDB.QueryRowContext(ctx,
+		fmt.Sprintf("SELECT name, priority FROM %s WHERE id = 'row1'", physical)).
+		Scan(&name, &priority)
+	if err != nil {
+		t.Fatal("query failed after schema migration:", err)
+	}
+	if name != "hello" {
+		t.Errorf("name = %q, want %q (data should be preserved)", name, "hello")
+	}
+}
+
+func TestUpdatePackage_SchemaAddTable(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	// Install v1 with no tables
+	seedPackage(t, stores, map[string]any{
+		"id": "schema-pkg-b", "title": "Schema B", "type": "surface", "version": "1.0.0",
+	})
+
+	// Update to v2 with a new table
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "schema-pkg-b", "title": "Schema B", "type": "surface", "version": "2.0.0",
+		"db_tables": map[string]any{
+			"audit": map[string]any{
+				"columns": map[string]any{"action": "text", "actor": "text"},
+			},
+		},
+	})
+
+	w := doUpdate(router, "schema-pkg-b", pkg)
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	// Verify table was created
+	physical := extPhysicalTable("schema-pkg-b", "audit")
+	_, err := database.TestDB.ExecContext(ctx,
+		fmt.Sprintf("INSERT INTO %s (id, action, actor) VALUES ('row1', 'test', 'user1')", physical))
+	if err != nil {
+		t.Fatal("new table should exist after update:", err)
+	}
+}
+
+func TestUpdatePackage_SettingsMerge(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	// Install with initial settings
+	seedPackage(t, stores, map[string]any{
+		"id": "settings-pkg", "title": "Settings Test", "type": "surface", "version": "1.0.0",
+		"settings": []any{
+			map[string]any{"key": "color", "type": "text", "default": "blue"},
+		},
+	})
+	// Set existing settings value
+	existing := json.RawMessage(`{"color":"red"}`)
+	stores.Packages.SetPackageSettings(ctx, "settings-pkg", existing)
+
+	// Update with new settings key
+	router := setupUpdateRouter(t, stores)
+	pkg := buildPkgBytes(t, map[string]any{
+		"id": "settings-pkg", "title": "Settings Test", "type": "surface", "version": "2.0.0",
+		"settings": []any{
+			map[string]any{"key": "color", "type": "text", "default": "blue"},
+			map[string]any{"key": "size", "type": "int", "default": float64(12)},
+		},
+	})
+
+	w := doUpdate(router, "settings-pkg", pkg)
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	// Verify settings: color preserved as "red", size added with default 12
+	raw, _ := stores.Packages.GetPackageSettings(ctx, "settings-pkg")
+	var settings map[string]any
+	json.Unmarshal(raw, &settings)
+
+	if settings["color"] != "red" {
+		t.Errorf("color = %v, want %q (existing should be preserved)", settings["color"], "red")
+	}
+	if settings["size"] != float64(12) {
+		t.Errorf("size = %v, want %v (new key should get default)", settings["size"], 12)
+	}
+}
+
+func TestExportPackage_Basic(t *testing.T) {
+	stores := newTestStores(t)
+
+	seedPackage(t, stores, map[string]any{
+		"id": "export-pkg", "title": "Export Test", "type": "surface", "version": "1.0.0",
+	})
+
+	router := setupUpdateRouter(t, stores)
+
+	req := httptest.NewRequest("GET", "/api/v1/admin/packages/export-pkg/export", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	// Verify response is a valid zip with manifest.json
+	zr, err := zip.NewReader(bytes.NewReader(w.Body.Bytes()), int64(w.Body.Len()))
+	if err != nil {
+		t.Fatal("response is not a valid zip:", err)
+	}
+
+	foundManifest := false
+	for _, f := range zr.File {
+		if f.Name == "manifest.json" {
+			foundManifest = true
+			rc, _ := f.Open()
+			data, _ := io.ReadAll(rc)
+			rc.Close()
+			var m map[string]any
+			if json.Unmarshal(data, &m) != nil {
+				t.Fatal("manifest.json is not valid JSON")
+			}
+			if m["id"] != "export-pkg" {
+				t.Errorf("manifest id = %v, want export-pkg", m["id"])
+			}
+		}
+	}
+	if !foundManifest {
+		t.Error("zip does not contain manifest.json")
+	}
+}
+
+func TestExportPackage_NotFound(t *testing.T) {
+	stores := newTestStores(t)
+	router := setupUpdateRouter(t, stores)
+
+	req := httptest.NewRequest("GET", "/api/v1/admin/packages/nonexistent/export", nil)
+	w := httptest.NewRecorder()
+	router.ServeHTTP(w, req)
+
+	if w.Code != http.StatusNotFound {
+		t.Fatalf("expected 404, got %d", w.Code)
+	}
+}
+
+// TestBundledInstall_DefaultAllowlist verifies the curated default set behavior.
+func TestBundledInstall_DefaultAllowlist(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	bundledDir := t.TempDir()
+	packagesDir := t.TempDir()
+
+	// Create packages: one in default set, one not
+	buildTestPkg(t, bundledDir, map[string]any{
+		"id": "notes", "title": "Notes", "type": "surface", "version": "1.0.0",
+	})
+	buildTestPkg(t, bundledDir, map[string]any{
+		"id": "regex-tester", "title": "Regex Tester", "type": "extension", "version": "1.0.0",
+	})
+
+	// Empty allowlist → curated defaults
+	InstallBundledPackages(bundledDir, packagesDir, "", stores, nil)
+
+	// "notes" is in the default set → should be installed
+	pkg, err := stores.Packages.Get(ctx, "notes")
+	if err != nil || pkg == nil {
+		t.Fatal("notes should be installed (in default set)")
+	}
+
+	// "regex-tester" is NOT in the default set → should be filtered
+	pkg, _ = stores.Packages.Get(ctx, "regex-tester")
+	if pkg != nil {
+		t.Fatal("regex-tester should NOT be installed (not in default set)")
+	}
+}
+
+// TestBundledInstall_WildcardAllowlist verifies "*" installs everything.
+func TestBundledInstall_WildcardAllowlist(t *testing.T) {
+	stores := newTestStores(t)
+	ctx := context.Background()
+
+	bundledDir := t.TempDir()
+	packagesDir := t.TempDir()
+
+	buildTestPkg(t, bundledDir, map[string]any{
+		"id": "any-pkg", "title": "Any", "type": "surface", "version": "1.0.0",
+	})
+
+	InstallBundledPackages(bundledDir, packagesDir, "*", stores, nil)
+
+	pkg, err := stores.Packages.Get(ctx, "any-pkg")
+	if err != nil || pkg == nil {
+		t.Fatal("any-pkg should be installed with * wildcard")
+	}
+}

server/handlers/semver.go

@@ -0,0 +1,97 @@
+package handlers
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Semver represents a parsed semantic version (major.minor.patch[-prerelease]).
+type Semver struct {
+	Major      int
+	Minor      int
+	Patch      int
+	Prerelease string
+}
+
+// ParseSemver parses a version string like "1.2.3" or "v1.2.3-beta.1".
+// Leading "v" is stripped. Prerelease suffix after "-" is preserved.
+func ParseSemver(s string) (Semver, error) {
+	s = strings.TrimSpace(s)
+	s = strings.TrimPrefix(s, "v")
+	if s == "" {
+		return Semver{}, fmt.Errorf("empty version string")
+	}
+
+	// Split off prerelease suffix
+	var pre string
+	if idx := strings.IndexByte(s, '-'); idx >= 0 {
+		pre = s[idx+1:]
+		s = s[:idx]
+	}
+
+	parts := strings.Split(s, ".")
+	if len(parts) != 3 {
+		return Semver{}, fmt.Errorf("version %q must have exactly 3 parts (major.minor.patch)", s)
+	}
+
+	major, err := strconv.Atoi(parts[0])
+	if err != nil {
+		return Semver{}, fmt.Errorf("invalid major version %q: %w", parts[0], err)
+	}
+	minor, err := strconv.Atoi(parts[1])
+	if err != nil {
+		return Semver{}, fmt.Errorf("invalid minor version %q: %w", parts[1], err)
+	}
+	patch, err := strconv.Atoi(parts[2])
+	if err != nil {
+		return Semver{}, fmt.Errorf("invalid patch version %q: %w", parts[2], err)
+	}
+
+	return Semver{Major: major, Minor: minor, Patch: patch, Prerelease: pre}, nil
+}
+
+// Compare returns -1 if a < b, 0 if a == b, +1 if a > b.
+// Prerelease versions sort lower than the same release version (per semver spec).
+func (a Semver) Compare(b Semver) int {
+	if a.Major != b.Major {
+		return cmpInt(a.Major, b.Major)
+	}
+	if a.Minor != b.Minor {
+		return cmpInt(a.Minor, b.Minor)
+	}
+	if a.Patch != b.Patch {
+		return cmpInt(a.Patch, b.Patch)
+	}
+	// Same numeric version — prerelease < release
+	if a.Prerelease == b.Prerelease {
+		return 0
+	}
+	if a.Prerelease == "" {
+		return 1 // a is release, b has prerelease → a > b
+	}
+	if b.Prerelease == "" {
+		return -1 // a has prerelease, b is release → a < b
+	}
+	// Both have prerelease — compare lexicographically
+	if a.Prerelease < b.Prerelease {
+		return -1
+	}
+	return 1
+}
+
+// String returns the version in "major.minor.patch[-prerelease]" format.
+func (v Semver) String() string {
+	s := fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
+	if v.Prerelease != "" {
+		s += "-" + v.Prerelease
+	}
+	return s
+}
+
+func cmpInt(a, b int) int {
+	if a < b {
+		return -1
+	}
+	return 1
+}

server/handlers/semver_test.go

@@ -0,0 +1,92 @@
+package handlers
+
+import "testing"
+
+func TestParseSemver(t *testing.T) {
+	tests := []struct {
+		input   string
+		want    Semver
+		wantErr bool
+	}{
+		{"1.2.3", Semver{1, 2, 3, ""}, false},
+		{"v1.2.3", Semver{1, 2, 3, ""}, false},
+		{"0.0.0", Semver{0, 0, 0, ""}, false},
+		{"1.2.3-beta.1", Semver{1, 2, 3, "beta.1"}, false},
+		{"v0.5.4-rc1", Semver{0, 5, 4, "rc1"}, false},
+		{"10.20.30", Semver{10, 20, 30, ""}, false},
+		{"", Semver{}, true},
+		{"not-a-version", Semver{}, true},
+		{"1.2", Semver{}, true},
+		{"1.2.3.4", Semver{}, true},
+		{"a.b.c", Semver{}, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			got, err := ParseSemver(tt.input)
+			if tt.wantErr {
+				if err == nil {
+					t.Fatalf("ParseSemver(%q) expected error, got %v", tt.input, got)
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("ParseSemver(%q) unexpected error: %v", tt.input, err)
+			}
+			if got != tt.want {
+				t.Errorf("ParseSemver(%q) = %v, want %v", tt.input, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSemverCompare(t *testing.T) {
+	tests := []struct {
+		a, b string
+		want int
+	}{
+		{"1.0.0", "2.0.0", -1},
+		{"2.0.0", "1.0.0", 1},
+		{"1.1.0", "1.0.0", 1},
+		{"1.0.0", "1.1.0", -1},
+		{"1.0.1", "1.0.0", 1},
+		{"1.0.0", "1.0.0", 0},
+		{"1.0.0-alpha", "1.0.0", -1},
+		{"1.0.0", "1.0.0-alpha", 1},
+		{"1.0.0-alpha", "1.0.0-beta", -1},
+		{"1.0.0-beta", "1.0.0-alpha", 1},
+		{"1.0.0-alpha", "1.0.0-alpha", 0},
+		{"0.5.3", "0.5.4", -1},
+		{"0.5.4", "0.5.3", 1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.a+"_vs_"+tt.b, func(t *testing.T) {
+			a, _ := ParseSemver(tt.a)
+			b, _ := ParseSemver(tt.b)
+			got := a.Compare(b)
+			if got != tt.want {
+				t.Errorf("(%s).Compare(%s) = %d, want %d", tt.a, tt.b, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSemverString(t *testing.T) {
+	tests := []struct {
+		v    Semver
+		want string
+	}{
+		{Semver{1, 2, 3, ""}, "1.2.3"},
+		{Semver{0, 0, 0, ""}, "0.0.0"},
+		{Semver{1, 0, 0, "beta.1"}, "1.0.0-beta.1"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.want, func(t *testing.T) {
+			if got := tt.v.String(); got != tt.want {
+				t.Errorf("Semver.String() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}

server/main.go

@@ -737,6 +737,8 @@ func main() {
 			admin.GET("/packages/:id/dependencies", pkgAdm.ListDependencies)  // v0.38.2
 			admin.GET("/packages/:id/consumers", pkgAdm.ListConsumers)        // v0.38.2
 			admin.POST("/packages/:id/test-tool", pkgAdm.TestTool)            // v0.38.2
+			admin.POST("/packages/:id/update", pkgAdm.UpdatePackage)          // v0.5.4
+			admin.GET("/packages/:id/export", pkgAdm.ExportPackage)           // v0.5.4
 			admin.GET("/dependencies", pkgAdm.ListAllDependencies)            // v0.38.2
 
 			// Workflow package export (v0.30.2)

src/js/sw/sdk/api-domains.js

@@ -253,6 +253,8 @@ export function createDomains(restClient) {
                 updateSettings:  (id, data) => rc.put(`/api/v1/admin/packages/${id}/settings`, data),
                 dependencies:    (id)       => rc.get(`/api/v1/admin/packages/${id}/dependencies`),  // v0.38.2
                 consumers:       (id)       => rc.get(`/api/v1/admin/packages/${id}/consumers`),     // v0.38.2
+                update:          (id, file) => rc.upload(`/api/v1/admin/packages/${id}/update`, file), // v0.5.4
+                exportPkg:       (id)       => `/api/v1/admin/packages/${id}/export`,                  // v0.5.4 (URL for window.open)
                 registry:        ()         => rc.get('/api/v1/admin/packages/registry'),
                 registryInstall: (url)      => rc.post('/api/v1/admin/packages/registry/install', { url }),
                 // v0.5.0: Extension permissions

src/js/sw/surfaces/admin/packages.js

@@ -116,6 +116,27 @@ export default function PackagesSection() {
         window.open(`${BASE}/api/v1/admin/packages/${id}/export`, '_blank');
     }
 
+    function updatePkg(pkg) {
+        const input = document.createElement('input');
+        input.type = 'file';
+        input.accept = '.pkg,.surface,.zip';
+        input.onchange = async () => {
+            const file = input.files[0];
+            if (!file) return;
+            const ok = await sw.confirm(`Update "${pkg.title}" from v${pkg.version}?\n\nExport a backup first if needed.`, { destructive: true });
+            if (!ok) return;
+            setInstalling(true);
+            try {
+                const res = await sw.api.admin.packages.update(pkg.id, file);
+                const data = res?.data || res || {};
+                sw.toast(`Updated to v${data.version || '?'}`, 'success');
+                load();
+            } catch (e) { sw.toast(e.message, 'error'); }
+            finally { setInstalling(false); }
+        };
+        input.click();
+    }
+
     // ── Settings drawer ─────────────────────────
     async function toggleSettings(pkgId) {
         if (expandedId === pkgId) {
@@ -271,6 +292,9 @@ export default function PackagesSection() {
                                         ${permsId === pkg.id ? 'Close' : 'Permissions'}
                                     </button>
                                 `}
+                                ${pkg.source !== 'core' && html`
+                                    <button class="btn-small" onClick=${() => updatePkg(pkg)}>Update</button>
+                                `}
                                 <button class="btn-small" onClick=${() => exportPkg(pkg.id)}>Export</button>
                                 ${pkg.source !== 'core' && !pkg.is_system && html`
                                     <button class="btn-small btn-danger" onClick=${() => deletePkg(pkg)}>Delete</button>