Normalize git-subdir source URLs to full HTTPS format

Standardize 12 git-subdir plugin entries from owner/repo shorthand to
full https://github.com/owner/repo.git URLs for consistency with the
existing HTTPS entries.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -44,7 +44,7 @@
       "description": "AI-first project auditor and re-engineer based on the 9 design principles and 7 design patterns from the TechWolf AI-First Bootcamp",
       "source": {
         "source": "git-subdir",
-        "url": "techwolf-ai/ai-first-toolkit",
+        "url": "https://github.com/techwolf-ai/ai-first-toolkit.git",
         "path": "plugins/ai-firstify",
         "ref": "main",
         "sha": "7f18e11d694b9ae62ea3009fbbc175f08ae913df"
@@ -209,7 +209,7 @@
       "category": "database",
       "source": {
         "source": "git-subdir",
-        "url": "Bigdata-com/bigdata-plugins-marketplace",
+        "url": "https://github.com/Bigdata-com/bigdata-plugins-marketplace.git",
         "path": "plugins/bigdata-com",
         "ref": "main"
       },
@@ -503,7 +503,7 @@
       "category": "development",
       "source": {
         "source": "git-subdir",
-        "url": "expo/skills",
+        "url": "https://github.com/expo/skills.git",
         "path": "plugins/expo",
         "ref": "main"
       },
@@ -670,7 +670,7 @@
       "description": "Build on Solana with Helius — live blockchain tools, expert coding patterns, and autonomous account signup",
       "source": {
         "source": "git-subdir",
-        "url": "helius-labs/core-ai",
+        "url": "https://github.com/helius-labs/core-ai.git",
         "path": "helius-plugin",
         "ref": "main",
         "sha": "05ea4d1128d46618266bbcc23a5e7019c57be0d6"
@@ -785,7 +785,7 @@
       "category": "productivity",
       "source": {
         "source": "git-subdir",
-        "url": "legalzoom/claude-plugins",
+        "url": "https://github.com/legalzoom/claude-plugins.git",
         "path": "plugins/legalzoom",
         "ref": "main",
         "sha": "f9fd8a0ca6e1421bc1aacb113a109663a7a6f6d8"
@@ -891,7 +891,7 @@
       "category": "database",
       "source": {
         "source": "git-subdir",
-        "url": "neondatabase/agent-skills",
+        "url": "https://github.com/neondatabase/agent-skills.git",
         "path": "plugins/neon-postgres",
         "ref": "main",
         "sha": "54d7a9db2ddd476f84d5d1fd7bac323907858a8b"
@@ -1109,7 +1109,7 @@
       "category": "development",
       "source": {
         "source": "git-subdir",
-        "url": "pydantic/skills",
+        "url": "https://github.com/pydantic/skills.git",
         "path": "plugins/ai",
         "ref": "main"
       },
@@ -1155,7 +1155,7 @@
       "category": "deployment",
       "source": {
         "source": "git-subdir",
-        "url": "railwayapp/railway-skills",
+        "url": "https://github.com/railwayapp/railway-skills.git",
         "path": "plugins/railway",
         "ref": "main",
         "sha": "d52f3741a6a33a3191d6138eb3d6c3355cb970d1"
@@ -1448,7 +1448,7 @@
       "category": "development",
       "source": {
         "source": "git-subdir",
-        "url": "stripe/ai",
+        "url": "https://github.com/stripe/ai.git",
         "path": "providers/claude/plugin",
         "ref": "main"
       },
@@ -1555,7 +1555,7 @@
       "category": "development",
       "source": {
         "source": "git-subdir",
-        "url": "UI5/plugins-claude",
+        "url": "https://github.com/UI5/plugins-claude.git",
         "path": "plugins/ui5",
         "ref": "main",
         "sha": "5070dfc1cef711d6efad40beb43750027039d71f"
@@ -1568,7 +1568,7 @@
       "category": "development",
       "source": {
         "source": "git-subdir",
-        "url": "UI5/plugins-claude",
+        "url": "https://github.com/UI5/plugins-claude.git",
         "path": "plugins/ui5-typescript-conversion",
         "ref": "main",
         "sha": "5070dfc1cef711d6efad40beb43750027039d71f"
@@ -1622,7 +1622,7 @@
       "category": "productivity",
       "source": {
         "source": "git-subdir",
-        "url": "zapier/zapier-mcp",
+        "url": "https://github.com/zapier/zapier-mcp.git",
         "path": "plugins/zapier",
         "ref": "main",
         "sha": "b93007e9a726c6ee93c57a949e732744ef5acbfd"