feat(adapters): external adapter plugin system with dynamic UI parser

- Plugin loader: install/reload/remove/reinstall external adapters
  from npm packages or local directories
- Plugin store persisted at ~/.paperclip/adapter-plugins.json
- Self-healing UI parser resolution with version caching
- UI: Adapter Manager page, dynamic loader, display registry
  with humanized names for unknown adapter types
- Dev watch: exclude adapter-plugins dir from tsx watcher
  to prevent mid-request server restarts during reinstall
- All consumer fallbacks use getAdapterLabel() for consistent display
- AdapterTypeDropdown uses controlled open state for proper close behavior
- Remove hermes-local from built-in UI (externalized to plugin)
- Add docs for external adapters and UI parser contract

server/src/services/heartbeat.ts

@@ -31,7 +31,7 @@ import { companySkillService } from "./company-skills.js";
 import { budgetService, type BudgetEnforcementScope } from "./budgets.js";
 import { secretService } from "./secrets.js";
 import { resolveDefaultAgentWorkspaceDir, resolveManagedProjectWorkspaceDir } from "../home-paths.js";
-import { summarizeHeartbeatRunResultJson } from "./heartbeat-run-summary.js";
+import { buildHeartbeatRunIssueComment, summarizeHeartbeatRunResultJson } from "./heartbeat-run-summary.js";
 import {
   buildWorkspaceReadyComment,
   cleanupExecutionWorkspaceArtifacts,
@@ -2838,6 +2838,19 @@ export function heartbeatService(db: Db) {
             exitCode: adapterResult.exitCode,
           },
         });
+        if (issueId && outcome === "succeeded") {
+          try {
+            const issueComment = buildHeartbeatRunIssueComment(adapterResult.resultJson ?? null);
+            if (issueComment) {
+              await issuesSvc.addComment(issueId, issueComment, { agentId: agent.id });
+            }
+          } catch (err) {
+            await onLog(
+              "stderr",
+              `[paperclip] Failed to post run summary comment: ${err instanceof Error ? err.message : String(err)}\n`,
+            );
+          }
+        }
         await releaseIssueExecutionAndPromote(finalizedRun);
       }