Add dynamic() support to prompt.form() plugin API

- prompt.form() inputs can now have dynamic() callbacks that update
  reactively when form values change (same pattern as auth/template plugins)
- Changed PromptFormRequest routing from one-shot to bidirectional events
- Added PromptFormResponse.done field to distinguish intermediate updates
- Added optional size (enum) to PromptFormRequest for dialog sizing
- Added optional rows to FormInputEditor for fixed height editors
- New httpsnippet plugin: generates code snippets with dynamic language
  and library selectors that update the code preview in real-time

package-lock.json

@@ -13,6 +13,7 @@
         "packages/plugin-runtime-types",
         "plugins-external/mcp-server",
         "plugins-external/template-function-faker",
+        "plugins-external/httpsnippet",
         "plugins/action-copy-curl",
         "plugins/action-copy-grpcurl",
         "plugins/action-send-folder",
@@ -2022,6 +2023,19 @@
         "node": ">=16.9"
       }
     },
+    "node_modules/@readme/httpsnippet": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/@readme/httpsnippet/-/httpsnippet-11.0.0.tgz",
+      "integrity": "sha512-XSyaAsJkZfmMO9R4WDlVJARZgd4wlImftSkMkKclidniXA1h6DTya9iTqJenQo9mHQLh3u6kAC3CDRaIV+LbLw==",
+      "license": "MIT",
+      "dependencies": {
+        "qs": "^6.11.2",
+        "stringify-object": "^3.3.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@replit/codemirror-emacs": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/@replit/codemirror-emacs/-/codemirror-emacs-6.1.0.tgz",
@@ -4045,6 +4059,10 @@
       "resolved": "plugins/filter-xpath",
       "link": true
     },
+    "node_modules/@yaak/httpsnippet": {
+      "resolved": "plugins-external/httpsnippet",
+      "link": true
+    },
     "node_modules/@yaak/importer-curl": {
       "resolved": "plugins/importer-curl",
       "link": true
@@ -7411,6 +7429,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/get-own-enumerable-property-symbols": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-3.0.2.tgz",
+      "integrity": "sha512-I0UBV/XOz1XkIJHEUDMZAbzCThU/H8DxmSfmdGcKPnVhu2VfFqr34jr9777IyaTYvxjedWhqVIilEDsCdP5G6g==",
+      "license": "ISC"
+    },
     "node_modules/get-proto": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/get-proto/-/get-proto-1.0.1.tgz",
@@ -8529,6 +8553,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-obj": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz",
+      "integrity": "sha512-l4RyHgRqGN4Y3+9JHVrNqO+tN0rV5My76uW5/nuO4K1b6vw5G8d/cmFjP9tRfEsdhZNt0IFdZuK/c2Vr4Nb+Qg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-plain-obj": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-4.1.0.tgz",
@@ -13789,6 +13822,29 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/stringify-object": {
+      "version": "3.3.0",
+      "resolved": "https://registry.npmjs.org/stringify-object/-/stringify-object-3.3.0.tgz",
+      "integrity": "sha512-rHqiFh1elqCQ9WPLIC8I0Q/g/wj5J1eMkyoiD6eoQApWHP0FtlK7rqnhmabL5VUY9JQCcqwwvlOaSuutekgyrw==",
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "get-own-enumerable-property-symbols": "^3.0.0",
+        "is-obj": "^1.0.1",
+        "is-regexp": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/stringify-object/node_modules/is-regexp": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-regexp/-/is-regexp-1.0.0.tgz",
+      "integrity": "sha512-7zjFAPO4/gwyQAAgRRmqeEeyIICSdmCqa3tsVHMdBzaXXRiqopZL4Cyghg/XulGWrtABTpbnYYzzIRffLkP4oA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/strip-ansi": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.1.2.tgz",
@@ -15788,6 +15844,34 @@
         "undici-types": "~7.16.0"
       }
     },
+    "plugins-external/httpsnippet": {
+      "name": "@yaak/httpsnippet",
+      "version": "1.0.0",
+      "dependencies": {
+        "@readme/httpsnippet": "^11.0.0"
+      },
+      "devDependencies": {
+        "@types/node": "^22.0.0",
+        "typescript": "^5.9.3"
+      }
+    },
+    "plugins-external/httpsnippet/node_modules/@types/node": {
+      "version": "22.19.9",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.19.9.tgz",
+      "integrity": "sha512-PD03/U8g1F9T9MI+1OBisaIARhSzeidsUjQaf51fOxrfjeiKN9bLVO06lHuHYjxdnqLWJijJHfqXPSJri2EM2A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~6.21.0"
+      }
+    },
+    "plugins-external/httpsnippet/node_modules/undici-types": {
+      "version": "6.21.0",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
+      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "plugins-external/mcp-server": {
       "name": "@yaak/mcp-server",
       "version": "0.1.7",