Bump version to 1.919.0, update edit format instructions to use search/replace syntax, and fix multi-root workspace path formatting

Author: robertpiosik

apps/editor/package.json

@@ -2,7 +2,7 @@
   "name": "gemini-coder",
   "displayName": "Code Web Chat",
   "description": "AI coding without agents (CWC)",
-  "version": "1.918.0",
+  "version": "1.919.0",
   "scripts": {
     "build": "npx vsce package --no-dependencies",
     "vscode:prepublish": "rimraf out && npm run compile",

apps/editor/src/constants/edit-format-instructions.ts

@@ -115,24 +115,24 @@ def subtract(a, b):
 
 ### Renamed file: \`src/examples/math_utils.py\` (old) \`src/examples/calculator.py\` (new)`
 
-export const EDIT_FORMAT_INSTRUCTIONS_BEFORE_AFTER = `${intro}, followed by a markdown code block showing the original and updated code snippets with Git-style merge conflict markers. Example:
+export const EDIT_FORMAT_INSTRUCTIONS_BEFORE_AFTER = `${intro}, followed by a markdown code block showing the original and updated code snippets with Git-style merge conflict syntax. Example:
 Changed greeting to wishes.
 
 ### Updated file: \`src/examples/hello.py\`
 
 \`\`\`python
-<<<<<<< HEAD
+<<<<<<< SEARCH
 GREETING = "Welcome everyone!"
 =======
 WISHES = "Have a nice day!"
->>>>>>>
-<<<<<<< HEAD
+>>>>>>> REPLACE
+<<<<<<< SEARCH
  def show_greeting():
    print(GREETING)
 =======
  def show_wishes():
    print(WISHES)
->>>>>>>
+>>>>>>> REPLACE
 \`\`\`
 
 Created a simple calculator with addition and subtraction.

apps/editor/src/context/context-initialization.ts

@@ -263,7 +263,7 @@ export const context_initialization = async (
                 workspace_folder.uri.fsPath,
                 file_path
               )
-              display_path = `${workspace_folder.name}:${relative_path}`
+              display_path = `${workspace_folder.name}/${relative_path}`
             } else {
               display_path = vscode.workspace.asRelativePath(file_path)
             }