feat: steadier live updates and notices for public proposals

- The web pings the live connection, reconnects when it goes quiet and
  reloads what each screen shows after reconnecting.
- Dropping a card on a column it cannot go to puts it back.
- Owners and admins get a notice when a proposal arrives.
- The proposal limit lives in Redis, so it holds across instances.
- REST tells whether I voted; pasted images leave the attachment list.
- Deleting a project removes its Git integration; no lint warnings left.
- Reactions and the blocked badge are components of their own.
- Docs: what is done and what is left (chapter 10), Word and PDF.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/mcp/src/app/api/taskstream.schema.ts

@@ -1875,6 +1875,8 @@ export interface components {
             blockedBy: components["schemas"]["IssueParentDto"][];
             /** @description How many want it done */
             votes: number;
+            /** @description Whether I voted for it (false without a token) */
+            voted: boolean;
             /** @description Place in the backlog and its board column (ascending, as text) */
             rank: string;
             checklist: components["schemas"]["ChecklistItemDto"][];
@@ -2438,7 +2440,7 @@ export interface components {
             path: string | null;
         };
         /** @enum {string} */
-        NotificationKind: "ASSIGNED" | "STATUS_CHANGED" | "QA_FAILED" | "COMMENTED" | "MENTIONED" | "REPLIED" | "WATCHED" | "ADDED_TO_PROJECT" | "REMINDER";
+        NotificationKind: "ASSIGNED" | "STATUS_CHANGED" | "QA_FAILED" | "COMMENTED" | "MENTIONED" | "REPLIED" | "PROPOSED" | "WATCHED" | "ADDED_TO_PROJECT" | "REMINDER";
         NotificationDto: {
             id: string;
             kind: components["schemas"]["NotificationKind"];