feat(rename): complete searchSpace to workspace transition across frontend and backend

- Introduced a comprehensive specification for renaming `searchSpace` to `workspace` in `surfsense_web` and `surfsense_desktop`, ensuring all TypeScript identifiers, React props, and local data structures are updated.
- Implemented migration shims for persisted local state to prevent data loss during the transition.
- Updated observability metrics and IPC channels to reflect the new naming convention.
- Removed legacy `active-search-space` module and replaced it with `active-workspace` to maintain consistency.
- Ensured no behavioral changes or data loss for users during the renaming process.

surfsense_web/content/docs/local-models/lm-studio.mdx

@@ -6,7 +6,7 @@ description: Connect LM Studio to SurfSense
 # Connect LM Studio
 
 Connect to your LM Studio local server. Add it from
-**Search Space Settings > Models**.
+**Workspace Settings > Models**.
 
 ## Base URL
 
@@ -51,7 +51,7 @@ Replace `<host>` with the LAN IP or domain for that machine.
 
 ## Add the Connection
 
-1. Open Search Space Settings.
+1. Open Workspace Settings.
 2. Go to Models.
 3. Select LM Studio.
 4. Set API Base URL.

surfsense_web/content/docs/local-models/ollama.mdx

@@ -6,7 +6,7 @@ description: Connect Ollama to SurfSense
 # Connect Ollama
 
 Connect to your Ollama local server. Add it from
-**Search Space Settings > Models**.
+**Workspace Settings > Models**.
 
 ## Base URL
 
@@ -52,7 +52,7 @@ Replace `<host>` with the LAN IP or domain for that machine.
 
 ## Add the Connection
 
-1. Open Search Space Settings.
+1. Open Workspace Settings.
 2. Go to Models.
 3. Select Ollama.
 4. Set API Base URL.

surfsense_web/content/docs/local-models/other-local-servers.mdx

@@ -56,7 +56,7 @@ http://<host>:<port>/v1
 
 ## Add the Connection
 
-1. Open Search Space Settings.
+1. Open Workspace Settings.
 2. Go to Models.
 3. Select OpenAI Compatible.
 4. Set API Base URL.