feat: formatted text, a list view, ticket details, public proposals and votes

Formatted text
- Descriptions, comments, replies and release notes render Markdown,
  sanitised with DOMPurify (tested against scripts, handlers and
  javascript: links). A pasted image is uploaded and written as
  ![name](attachment:<id>); the web fetches it with the reader's session,
  so it works on private projects. Every text box has a preview. The
  attachment upload now answers its attachmentId.

List view
- /p/:key/list: every ticket as rows, sortable by any column, filtered by
  text, open/closed, type, priority and assignee; status, priority and
  assignee change in place; bulk edit (the backlog's bar, now shared).

Ticket details
- Reactions on comments (GitHub's eight), for members and viewers.
- Duplicate a ticket: what it says, not where it stands.
- blockedBy: open tickets it waits for (BLOCKS / DEPENDS_ON), worked out
  when reading with one query per board or page; shown on cards, list
  rows and the ticket.

Public proposals
- A public project can take bug reports and ideas from anyone
  (acceptsProposals): POST /api/explore/projects/{project}/proposals and
  the form at /p/:key/proponer. They become tickets labelled «propuesta»,
  opened by TaskStream; a honeypot field and 5 per address every 15
  minutes keep spam out. No e-mail is asked: it would be public.

Votes
- Anyone signed in votes on a public project's tickets, members on a
  private one (voteIssue, PUT/DELETE /api/issues/{issue}/vote): votes and
  voted on each ticket, buttons on the ticket and the roadmap, a column
  in the list. The showcase carries votes and the open proposals.

MCP: vote_issue, duplicate_issue, react_to_comment; listings show
blockers and votes. Docs, Word and PDF updated; chat notifications
(Discord, Slack, Telegram) noted for later.

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

libs/web/tracker/infrastructure/src/lib/adapters/graphql-issues.gateway.ts

@@ -11,6 +11,7 @@ import {
   Issue,
   IssuePage,
   IssuesGateway,
+  IssueListFilter,
   IssueSummary,
   LinkIssuesInput,
   MyIssuesFilter,
@@ -25,10 +26,12 @@ import {
   BoardDocument,
   ChangeIssueStatusDocument,
   CreateIssueDocument,
+  DuplicateIssueDocument,
   DueIssuesDocument,
   EpicsDocument,
   IssueChildrenDocument,
   IssueDocument,
+  IssueListDocument,
   LinkIssuesDocument,
   MyIssuesDocument,
   RankIssueDocument,
@@ -41,6 +44,7 @@ import {
   SetIssueReleaseDocument,
   UnlinkIssuesDocument,
   UnwatchIssueDocument,
+  VoteIssueDocument,
   WatchIssueDocument,
   UpdateChecklistItemDocument,
   UpdateIssueDocument,
@@ -102,6 +106,24 @@ export class GraphqlIssuesGateway extends IssuesGateway {
       );
   }
 
+  list(filter: IssueListFilter): Observable<IssuePage> {
+    const { limit, ...criteria } = filter;
+    return this.gql
+      .query(IssueListDocument, {
+        filter: {
+          ...criteria,
+          search: criteria.search?.trim() || undefined,
+        } as never,
+        limit,
+      })
+      .pipe(
+        map((d) => ({
+          items: d.issues.items.map(toIssueSummary),
+          total: d.issues.total,
+        })),
+      );
+  }
+
   search(projectId: string, text: string): Observable<IssueSummary[]> {
     return this.gql
       .query(SearchIssuesDocument, { filter: { projectId, search: text } })
@@ -114,6 +136,12 @@ export class GraphqlIssuesGateway extends IssuesGateway {
       .pipe(map((d) => toCommandResult(d.createIssue)));
   }
 
+  duplicate(issueId: string): Observable<CommandResult> {
+    return this.gql
+      .mutate(DuplicateIssueDocument, { issueId })
+      .pipe(map((d) => toCommandResult(d.duplicateIssue)));
+  }
+
   update(input: UpdateIssueInput): Observable<CommandResult> {
     return this.gql
       .mutate(UpdateIssueDocument, { input: input as never })
@@ -147,6 +175,12 @@ export class GraphqlIssuesGateway extends IssuesGateway {
       .pipe(map((d) => toCommandResult(d.unlinkIssues)));
   }
 
+  vote(issueId: string, on: boolean): Observable<CommandResult> {
+    return this.gql
+      .mutate(VoteIssueDocument, { issueId, on })
+      .pipe(map((d) => toCommandResult(d.voteIssue)));
+  }
+
   watch(issueId: string, watching: boolean): Observable<CommandResult> {
     return watching
       ? this.gql