feat(macos): Add tree-sitter syntax highlighting via Neon

.github/workflows/macos.yml

@@ -44,6 +44,50 @@ jobs:
       - name: Install xcbeautify
         run: brew install xcbeautify
 
+      - name: Clone local tree-sitter packages
+        run: |
+          mkdir -p apps/purepoint-macos/LocalPackages
+          git clone --depth 1 https://github.com/tree-sitter/tree-sitter-css.git apps/purepoint-macos/LocalPackages/tree-sitter-css
+          git clone --depth 1 https://github.com/tree-sitter/tree-sitter-javascript.git apps/purepoint-macos/LocalPackages/tree-sitter-javascript
+          git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-lua.git apps/purepoint-macos/LocalPackages/tree-sitter-lua
+          git clone --depth 1 https://github.com/tree-sitter/tree-sitter-python.git apps/purepoint-macos/LocalPackages/tree-sitter-python
+          git clone --depth 1 https://github.com/tree-sitter-grammars/tree-sitter-yaml.git apps/purepoint-macos/LocalPackages/tree-sitter-yaml
+
+      - name: Prepare local packages for Xcode
+        run: |
+          # Xcode 26 ignores the explicit `sources` parameter in local SPM packages,
+          # so restructure each package to use path-based auto-discovery instead.
+          for pkg in apps/purepoint-macos/LocalPackages/tree-sitter-*; do
+            lib=$(sed -n 's/.*name: "\(TreeSitter[^"]*\)".*/\1/p' "$pkg/Package.swift" | head -1)
+            # Copy public header into src/include/
+            mkdir -p "$pkg/src/include"
+            find "$pkg/bindings/swift" -name '*.h' -exec cp {} "$pkg/src/include/" \;
+            # Copy queries into src/ so resources path works with path: "src"
+            cp -r "$pkg/queries" "$pkg/src/queries" 2>/dev/null || true
+            # Remove non-C/H files from src/ (JSON metadata confuses SPM)
+            find "$pkg/src" -type f -not -name '*.c' -not -name '*.h' -not -name '*.scm' -delete
+            find "$pkg/src" -type d -empty -delete 2>/dev/null || true
+            # Rewrite Package.swift: use path "src" so SPM auto-discovers all .c files
+            cat > "$pkg/Package.swift" << PKGEOF
+          // swift-tools-version:5.3
+          import PackageDescription
+          let package = Package(
+              name: "$lib",
+              products: [.library(name: "$lib", targets: ["$lib"])],
+              targets: [
+                  .target(
+                      name: "$lib",
+                      path: "src",
+                      resources: [.copy("queries")],
+                      publicHeadersPath: "include",
+                      cSettings: [.headerSearchPath(".")]
+                  ),
+              ],
+              cLanguageStandard: .c11
+          )
+          PKGEOF
+          done
+
       - name: Build
         run: |
           xcodebuild build \

.gitignore

@@ -49,5 +49,8 @@ build/
 .ppg/swarms/
 .ppg/conductor-context.md
 
+# Tree-sitter local overrides (cloned per-developer, not project source)
+apps/purepoint-macos/LocalPackages/
+
 # PurePoint runtime
 .pu/

apps/purepoint-macos/purepoint-macos/Models/EditorTab.swift

@@ -15,6 +15,7 @@ enum EditorLanguage: String, CaseIterable {
     case rust
     case javascript
     case typescript
+    case tsx
     case python
     case markdown
     case json
@@ -23,38 +24,116 @@ enum EditorLanguage: String, CaseIterable {
     case html
     case css
     case shell
+    case c
+    case cpp
+    case go
+    case ruby
+    case php
+    case java
+    case csharp
+    case scala
+    case haskell
+    case lua
+    case xml
     case plaintext
 
     static func detect(from filename: String) -> EditorLanguage {
+        let name = (filename as NSString).lastPathComponent.lowercased()
+
+        if let match = knownFilenames[name] { return match }
+
         let ext = (filename as NSString).pathExtension.lowercased()
         switch ext {
         case "swift": return .swift
         case "rs": return .rust
         case "js", "jsx", "mjs", "cjs": return .javascript
-        case "ts", "tsx", "mts", "cts": return .typescript
+        case "ts", "mts", "cts": return .typescript
+        case "tsx": return .tsx
         case "py", "pyi": return .python
-        case "md", "markdown": return .markdown
-        case "json": return .json
+        case "md", "markdown", "mdx": return .markdown
+        case "json", "jsonc", "json5": return .json
         case "yml", "yaml": return .yaml
         case "toml": return .toml
         case "html", "htm": return .html
         case "css", "scss", "sass", "less": return .css
         case "sh", "bash", "zsh", "fish": return .shell
+        case "c", "h": return .c
+        case "cpp", "cc", "cxx", "hpp", "hxx", "hh": return .cpp
+        case "go": return .go
+        case "rb", "rake", "gemspec": return .ruby
+        case "php": return .php
+        case "java": return .java
+        case "cs": return .csharp
+        case "scala", "sc": return .scala
+        case "hs", "lhs": return .haskell
+        case "lua": return .lua
+        case "xml", "xsl", "xslt", "svg", "plist": return .xml
+        case "graphql", "gql": return .plaintext
+        case "dockerfile": return .shell
         default: return .plaintext
         }
     }
 
+    private static let knownFilenames: [String: EditorLanguage] = [
+        // Lock files
+        "cargo.lock": .toml,
+        "package.resolved": .json,
+        "composer.lock": .json,
+        // Ruby conventions
+        "gemfile": .ruby,
+        "rakefile": .ruby,
+        "podfile": .ruby,
+        "vagrantfile": .ruby,
+        "fastfile": .ruby,
+        "brewfile": .ruby,
+        "dangerfile": .ruby,
+        "guardfile": .ruby,
+        // Build/task files
+        "makefile": .shell,
+        "gnumakefile": .shell,
+        "dockerfile": .shell,
+        "justfile": .shell,
+        "procfile": .shell,
+        // Ignore files
+        ".gitignore": .shell,
+        ".dockerignore": .shell,
+        ".npmignore": .shell,
+        ".hgignore": .shell,
+        // Config dotfiles
+        ".editorconfig": .plaintext,
+        ".gitconfig": .plaintext,
+        ".gitmodules": .plaintext,
+        // Shell dotfiles
+        ".zshrc": .shell,
+        ".bashrc": .shell,
+        ".bash_profile": .shell,
+        ".profile": .shell,
+        ".zprofile": .shell,
+        ".zshenv": .shell,
+        ".bash_aliases": .shell,
+        ".bash_logout": .shell,
+    ]
+
     var icon: String {
         switch self {
         case .swift: return "swift"
         case .rust: return "gearshape.2"
-        case .javascript, .typescript: return "curlybraces"
+        case .javascript, .typescript, .tsx: return "curlybraces"
         case .python: return "chevron.left.forwardslash.chevron.right"
         case .markdown: return "doc.text"
         case .json, .yaml, .toml: return "doc.badge.gearshape"
-        case .html: return "globe"
+        case .html, .xml: return "globe"
         case .css: return "paintbrush"
         case .shell: return "terminal"
+        case .c, .cpp: return "c.square"
+        case .go: return "arrow.right.arrow.left"
+        case .ruby: return "diamond"
+        case .php: return "server.rack"
+        case .java: return "cup.and.saucer"
+        case .csharp: return "number"
+        case .scala: return "s.square"
+        case .haskell: return "function"
+        case .lua: return "moon"
         case .plaintext: return "doc"
         }
     }