feat: Add Pascal/Delphi language support with DFM/FMX extraction

Implements tree-sitter-based extraction for Pascal/Delphi source files
(.pas, .dpr, .dpk, .lpr) and a custom regex-based DfmExtractor for
form files (.dfm, .fmx). Covers classes, records, interfaces, methods,
properties, fields, enums, constants, type aliases, uses-imports,
visibility sections, inheritance, call extraction, and DFM component
hierarchies with event handler references.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package-lock.json

@@ -15,7 +15,8 @@
         "commander": "^14.0.2",
         "figlet": "^1.8.0",
         "picomatch": "^4.0.3",
-        "tree-sitter": "0.22.4"
+        "tree-sitter": "0.22.4",
+        "tree-sitter-pascal": "github:Isopod/tree-sitter-pascal"
       },
       "bin": {
         "codegraph": "dist/bin/codegraph.js"
@@ -877,7 +878,6 @@
       "hasInstallScript": true,
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "dependencies": {
         "node-addon-api": "^8.3.0",
         "node-gyp-build": "^4.8.4"
@@ -909,7 +909,6 @@
       "integrity": "sha512-/bRZty2mXUIFY/xU5HLvveNHlswNJej+RnxBjOMkidWfwZzgTbPG1E3K5TOxRLOR+5hX7bSofy8yf1hZevMS8A==",
       "license": "MIT",
       "optional": true,
-      "peer": true,
       "engines": {
         "node": "^18 || ^20 || >= 21"
       }
@@ -2342,6 +2341,7 @@
       "integrity": "sha512-usbHZP9/oxNsUY65MQUsduGRqDHQOou1cagUSwjhoSYAmSahjQDAVsh9s+SlZkn8X8+O1FULRGwHu7AFP3kjzg==",
       "hasInstallScript": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "node-addon-api": "^8.3.0",
         "node-gyp-build": "^4.8.4"
@@ -2582,6 +2582,23 @@
         }
       }
     },
+    "node_modules/tree-sitter-pascal": {
+      "version": "0.10.2",
+      "resolved": "git+ssh://git@github.com/Isopod/tree-sitter-pascal.git#042119eca2e18a60e56317fb06ee3ba5c32cb447",
+      "hasInstallScript": true,
+      "license": "MIT",
+      "dependencies": {
+        "node-gyp-build": "^4.8.4"
+      },
+      "peerDependencies": {
+        "tree-sitter": "^0.22.0"
+      },
+      "peerDependenciesMeta": {
+        "tree_sitter": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/tree-sitter-php": {
       "version": "0.23.11",
       "resolved": "https://registry.npmjs.org/tree-sitter-php/-/tree-sitter-php-0.23.11.tgz",
@@ -2818,6 +2835,7 @@
       "integrity": "sha512-o5a9xKjbtuhY6Bi5S3+HvbRERmouabWbyUcpXXUA1u+GNUKoROi9byOJ8M0nHbHYHkYICiMlqxkg1KkYmm25Sw==",
       "dev": true,
       "license": "MIT",
+      "peer": true,
       "dependencies": {
         "esbuild": "^0.21.3",
         "postcss": "^8.4.43",