docs: sync Silo server documentation

Auto-synced from kindred/silo main branch.

docs/src/silo-server/MODULES.md

@@ -23,7 +23,7 @@ These cannot be disabled. They define what Silo *is*.
 |-----------|------|-------------|
 | `core` | Core PDM | Items, revisions, files, BOM, search, import/export, part number generation |
 | `schemas` | Schemas | Part numbering schema parsing, segment management, form descriptors |
-| `storage` | Storage | MinIO/S3 file storage, presigned uploads, versioning |
+| `storage` | Storage | Filesystem storage |
 
 ### 2.2 Optional Modules
 
@@ -470,12 +470,10 @@ Returns full config grouped by module with secrets redacted:
     "default": "kindred-rd"
   },
   "storage": {
-    "endpoint": "minio:9000",
-    "bucket": "silo-files",
-    "access_key": "****",
-    "secret_key": "****",
-    "use_ssl": false,
-    "region": "us-east-1",
+    "backend": "filesystem",
+    "filesystem": {
+      "root_dir": "/var/lib/silo/data"
+    },
     "status": "connected"
   },
   "database": {
@@ -566,7 +564,7 @@ Available for modules with external connections:
 
 | Module | Test Action |
 |--------|------------|
-| `storage` | Ping MinIO, verify bucket exists |
+| `storage` | Verify filesystem storage directory is accessible |
 | `auth` (ldap) | Attempt LDAP bind with configured credentials |
 | `auth` (oidc) | Fetch OIDC discovery document from issuer URL |
 | `odoo` | Attempt XML-RPC connection to Odoo |
@@ -602,11 +600,9 @@ database:
   sslmode: disable
 
 storage:
-  endpoint: minio:9000
-  bucket: silo-files
-  access_key: silominio
-  secret_key: silominiosecret
-  use_ssl: false
+  backend: filesystem
+  filesystem:
+    root_dir: /var/lib/silo/data
 
 schemas:
   directory: /etc/silo/schemas

docs/src/silo-server/frontend-spec.md

@@ -337,7 +337,7 @@ Supporting files:
 | File | Purpose |
 |------|---------|
 | `web/src/components/items/CategoryPicker.tsx` | Multi-stage domain/subcategory selector |
-| `web/src/components/items/FileDropZone.tsx` | Drag-and-drop file upload with MinIO presigned URLs |
+| `web/src/components/items/FileDropZone.tsx` | Drag-and-drop file upload |
 | `web/src/components/items/TagInput.tsx` | Multi-select tag input for projects |
 | `web/src/hooks/useFormDescriptor.ts` | Fetches and caches form descriptor from `/api/schemas/{name}/form` |
 | `web/src/hooks/useFileUpload.ts` | Manages presigned URL upload flow |
@@ -421,7 +421,7 @@ Below the picker, the selected category is shown as a breadcrumb: `Fasteners ›
 
 ### FileDropZone
 
-Handles drag-and-drop and click-to-browse file uploads with MinIO presigned URL flow.
+Handles drag-and-drop and click-to-browse file uploads.
 
 **Props**:
 
@@ -435,7 +435,7 @@ interface FileDropZoneProps {
 
 interface PendingAttachment {
   file: File;
-  objectKey: string;          // MinIO key after upload
+  objectKey: string;          // storage key after upload
   uploadProgress: number;     // 0-100
   uploadStatus: 'pending' | 'uploading' | 'complete' | 'error';
   error?: string;
@@ -462,7 +462,7 @@ Clicking the zone opens a hidden `<input type="file" multiple>`.
 
 1. On file selection/drop, immediately request a presigned upload URL: `POST /api/uploads/presign` with `{ filename, content_type, size }`.
 2. Backend returns `{ object_key, upload_url, expires_at }`.
-3. `PUT` the file directly to the presigned MinIO URL using `XMLHttpRequest` (for progress tracking).
+3. `PUT` the file directly to the presigned URL using `XMLHttpRequest` (for progress tracking).
 4. On completion, update `PendingAttachment.uploadStatus` to `'complete'` and store the `object_key`.
 5. The `object_key` is later sent to the item creation endpoint to associate the file.
 
@@ -589,10 +589,10 @@ Items 1-5 below are implemented. Item 4 (hierarchical categories) is resolved by
 ```
 POST /api/uploads/presign
 Request:  { "filename": "bracket.FCStd", "content_type": "application/octet-stream", "size": 2400000 }
-Response: { "object_key": "uploads/tmp/{uuid}/{filename}", "upload_url": "https://minio.../...", "expires_at": "2026-02-06T..." }
+Response: { "object_key": "uploads/tmp/{uuid}/{filename}", "upload_url": "https://...", "expires_at": "2026-02-06T..." }
 ```
 
-The Go handler generates a presigned PUT URL via the MinIO SDK. Objects are uploaded to a temporary prefix. On item creation, they're moved/linked to the item's permanent prefix.
+The Go handler generates a presigned PUT URL for direct upload. Objects are uploaded to a temporary prefix. On item creation, they're moved/linked to the item's permanent prefix.
 
 ### 2. File Association -- IMPLEMENTED
 
@@ -612,7 +612,7 @@ Request:  { "object_key": "uploads/tmp/{uuid}/thumb.png" }
 Response: 204
 ```
 
-Stores the thumbnail at `items/{item_id}/thumbnail.png` in MinIO. Updates `item.thumbnail_key` column.
+Stores the thumbnail at `items/{item_id}/thumbnail.png` in storage. Updates `item.thumbnail_key` column.
 
 ### 4. Hierarchical Categories -- IMPLEMENTED (via Form Descriptor)
 

docs/src/silo-server/overview.md

@@ -34,7 +34,7 @@ silo/
 │   ├── ods/               # ODS spreadsheet library
 │   ├── partnum/           # Part number generation
 │   ├── schema/            # YAML schema parsing
-│   ├── storage/           # MinIO file storage
+│   ├── storage/           # Filesystem storage
 │   └── testutil/          # Test helpers
 ├── web/                   # React SPA (Vite + TypeScript)
 │   └── src/
@@ -55,7 +55,7 @@ silo/
 
 See the **[Installation Guide](docs/INSTALL.md)** for complete setup instructions.
 
-**Docker Compose (quickest — includes PostgreSQL, MinIO, OpenLDAP, and Silo):**
+**Docker Compose (quickest — includes PostgreSQL, OpenLDAP, and Silo):**
 
 ```bash
 ./scripts/setup-docker.sh
@@ -65,7 +65,7 @@ docker compose -f deployments/docker-compose.allinone.yaml up -d
 **Development (local Go + Docker services):**
 
 ```bash
-make docker-up    # Start PostgreSQL + MinIO in Docker
+make docker-up    # Start PostgreSQL in Docker
 make run          # Run silo locally with Go
 ```