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/api/tracker/presenters/src/lib/http/dto/requests.dto.ts

@@ -8,6 +8,7 @@ import {
   IssueLinkType,
   IssuePriority,
   ProjectRole,
+  REACTIONS,
   SETTING_COLORS,
   StatusCategory,
   TYPE_ICONS,
@@ -88,7 +89,15 @@ export class CreateProjectDto {
 
 export class UpdateProjectDto extends PartialType(
   OmitType(CreateProjectDto, ['key'] as const),
-) {}
+) {
+  @ApiPropertyOptional({
+    description:
+      'Take bug reports and ideas from anyone through the public form (while public)',
+  })
+  @IsOptional()
+  @IsBoolean()
+  acceptsProposals?: boolean;
+}
 
 export class DeleteProjectQueryDto {
   @ApiProperty({
@@ -985,6 +994,59 @@ export class AddCommentDto extends CommentBodyDto {
   replyTo?: string;
 }
 
+export class ReactToCommentDto {
+  @ApiProperty({ enum: REACTIONS, example: '👍' })
+  @IsIn(REACTIONS)
+  emoji!: string;
+
+  @ApiProperty({ description: 'true adds the reaction, false takes it back' })
+  @IsBoolean()
+  on!: boolean;
+}
+
+// ---- Public proposals -------------------------------------------------------
+
+export class ProposalDto {
+  @ApiProperty({
+    enum: ['BUG', 'IDEA'],
+    description: 'A bug report or an idea',
+  })
+  @IsIn(['BUG', 'IDEA'])
+  kind!: 'BUG' | 'IDEA';
+
+  @ApiProperty({ minLength: 3, maxLength: 150 })
+  @IsString()
+  @MinLength(3)
+  @MaxLength(150)
+  title!: string;
+
+  @ApiPropertyOptional({
+    maxLength: 5000,
+    description: 'What happens, or what they would like (Markdown)',
+  })
+  @IsOptional()
+  @IsString()
+  @MaxLength(5000)
+  description?: string;
+
+  @ApiPropertyOptional({
+    maxLength: 80,
+    description:
+      'How they sign it; shown in the ticket (no e-mail: it would be public)',
+  })
+  @IsOptional()
+  @IsString()
+  @MaxLength(80)
+  author?: string;
+
+  @ApiPropertyOptional({
+    description: 'Leave empty: a field only bots fill in',
+  })
+  @IsOptional()
+  @IsString()
+  website?: string;
+}
+
 // ---- Releases ---------------------------------------------------------------
 
 export class CreateReleaseDto {