feat: comments-first ask + comment→reply→offer→proposal loop (D19/D10/D8, PUC-8); sunset the input webview (spec §6.10)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

package.json

@@ -135,6 +135,18 @@
         "command": "cowriting.stopCoediting",
         "title": "Stop editing with Claude",
         "category": "Cowriting"
+      },
+      {
+        "command": "cowriting.askClaude",
+        "title": "Ask Claude",
+        "category": "Cowriting",
+        "icon": "$(sparkle)"
+      },
+      {
+        "command": "cowriting.makeThreadEdit",
+        "title": "✦ Make this edit",
+        "category": "Cowriting",
+        "icon": "$(sparkle)"
       }
     ],
     "menus": {
@@ -171,6 +183,14 @@
           "command": "cowriting.editDocument",
           "when": "false"
         },
+        {
+          "command": "cowriting.askClaude",
+          "when": "editorLangId == markdown && cowriting.isCoediting"
+        },
+        {
+          "command": "cowriting.makeThreadEdit",
+          "when": "false"
+        },
         {
           "command": "cowriting.acceptAllProposals",
           "when": "editorLangId == markdown && cowriting.isCoediting"
@@ -194,6 +214,11 @@
           "when": "resourceLangId == markdown && cowriting.isCoediting",
           "group": "navigation@1"
         },
+        {
+          "command": "cowriting.askClaude",
+          "when": "resourceLangId == markdown && cowriting.isCoediting",
+          "group": "navigation@2"
+        },
         {
           "command": "cowriting.markReviewed",
           "when": "resourceLangId == markdown && cowriting.isCoediting && cowriting.baselineMode == snapshot",
@@ -249,11 +274,21 @@
       "comments/commentThread/context": [
         {
           "command": "cowriting.reply",
-          "group": "inline",
+          "group": "inline@1",
           "when": "commentController == cowriting.threads"
+        },
+        {
+          "command": "cowriting.makeThreadEdit",
+          "group": "inline@2",
+          "when": "commentController == cowriting.threads && commentThread == offer"
         }
       ],
       "comments/commentThread/title": [
+        {
+          "command": "cowriting.makeThreadEdit",
+          "group": "inline@1",
+          "when": "commentController == cowriting.threads && commentThread == offer"
+        },
         {
           "command": "cowriting.resolveThread",
           "group": "inline",