Add bill action pipeline, admin health panel, and LLM provider fixes

- Fetch bill actions from Congress.gov and populate the action timeline
- Add nightly batch task and beat schedule for active bill actions
- Add admin reprocess endpoint for per-bill debugging
- Add BriefPanel with "What Changed" view and version history
- Add External API Health section with per-source latency testing
- Redesign Manual Controls as health panel with status dots and descriptions
- Add Resume Analysis task for stalled LLM jobs
- Add Backfill Dates & Links task for bills with null metadata
- Fix LLM provider/model DB overrides being ignored (env vars used instead)
- Fix Gemini 404: gemini-1.5-pro deprecated → gemini-2.0-flash
- Fix Anthropic models list: use REST API directly (SDK too old for .models)
- Replace test-LLM full analysis with lightweight ping (max_tokens=20)
- Add has_document field to BillDetail; show "No bill text published" state
- Fix "Introduced: —" showing for bills with null introduced_date
- Add bills_missing_sponsor and bills_missing_metadata to admin stats
- Add GovInfo health check using /collections endpoint (fixes 500 from /packages)

Authored-By: Jack Levy

frontend/app/bills/[id]/page.tsx

@@ -2,7 +2,7 @@
 
 import { use, useEffect, useRef } from "react";
 import Link from "next/link";
-import { ArrowLeft, ExternalLink, User } from "lucide-react";
+import { ArrowLeft, ExternalLink, FileX, User } from "lucide-react";
 import { useBill, useBillNews, useBillTrend } from "@/lib/hooks/useBills";
 import { BriefPanel } from "@/components/bills/BriefPanel";
 import { ActionTimeline } from "@/components/bills/ActionTimeline";
@@ -82,10 +82,12 @@ export default function BillDetailPage({ params }: { params: Promise<{ id: strin
               {bill.sponsor.state && <span>{bill.sponsor.state}</span>}
             </div>
           )}
-          <p className="text-xs text-muted-foreground mt-1">
-            Introduced: {formatDate(bill.introduced_date)}
+          <p className="text-xs text-muted-foreground mt-1 flex items-center gap-3 flex-wrap">
+            {bill.introduced_date && (
+              <span>Introduced: {formatDate(bill.introduced_date)}</span>
+            )}
             {bill.congress_url && (
-              <a href={bill.congress_url} target="_blank" rel="noopener noreferrer" className="ml-3 hover:text-primary transition-colors">
+              <a href={bill.congress_url} target="_blank" rel="noopener noreferrer" className="hover:text-primary transition-colors">
                 congress.gov <ExternalLink className="w-3 h-3 inline" />
               </a>
             )}
@@ -97,7 +99,39 @@ export default function BillDetailPage({ params }: { params: Promise<{ id: strin
       {/* Content grid */}
       <div className="grid grid-cols-1 md:grid-cols-3 gap-4 md:gap-6">
         <div className="md:col-span-2 space-y-6">
-          <BriefPanel briefs={bill.briefs} />
+          {bill.briefs.length > 0 ? (
+            <BriefPanel briefs={bill.briefs} />
+          ) : bill.has_document ? (
+            <div className="bg-card border border-border rounded-lg p-6 text-center space-y-2">
+              <p className="text-sm font-medium text-muted-foreground">Analysis pending</p>
+              <p className="text-xs text-muted-foreground">
+                Bill text was retrieved but has not yet been analyzed. Check back shortly.
+              </p>
+            </div>
+          ) : (
+            <div className="bg-card border border-border rounded-lg p-6 space-y-3">
+              <div className="flex items-center gap-2 text-muted-foreground">
+                <FileX className="w-4 h-4 shrink-0" />
+                <span className="text-sm font-medium">No bill text published</span>
+              </div>
+              <p className="text-sm text-muted-foreground">
+                As of {new Date().toLocaleDateString("en-US", { month: "long", day: "numeric", year: "numeric" })},{" "}
+                no official text has been received for{" "}
+                <span className="font-medium">{billLabel(bill.bill_type, bill.bill_number)}</span>.
+                Analysis will be generated automatically once text is published on Congress.gov.
+              </p>
+              {bill.congress_url && (
+                <a
+                  href={bill.congress_url}
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  className="inline-flex items-center gap-1 text-xs text-primary hover:underline"
+                >
+                  Check status on Congress.gov <ExternalLink className="w-3 h-3" />
+                </a>
+              )}
+            </div>
+          )}
           <ActionTimeline actions={bill.actions} />
         </div>
         <div className="space-y-4">