Update report generation to dynamically discover and display author commit data

Refactor `timmy-report.ts` to dynamically collect and display author commit samples from git log, update `context.md` to reflect dynamic author data, and adjust `timmy-report.md` to use the new dynamic contributor summary.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 90c7a60b-2c61-4699-b5c6-6a1ac7469a4d
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: cf2341e4-4927-4087-a7c9-a93340626de0
Replit-Helium-Checkpoint-Created: true

scripts/src/timmy-report.ts

@@ -61,9 +61,6 @@ process.stdout.write("Collecting git data…\n");
 const shortlog   = git("shortlog -sn HEAD");
 const logOneline = git("log --oneline HEAD");
 
-const alexSample        = git(`log HEAD --author="alexpaynex" --pretty=format:"%h %s" --stat -10`);
-const replitAgentSample = git(`log HEAD --author="Replit Agent" --pretty=format:"%h %s" --stat -10`);
-
 // Validate that git data is non-empty — fail loudly rather than commit blank sections
 if (!shortlog || shortlog === "(git command failed)") {
   throw new Error(`git shortlog returned empty output. ROOT=${ROOT}`);
@@ -72,7 +69,24 @@ if (!logOneline || logOneline === "(git command failed)") {
   throw new Error(`git log returned empty output. ROOT=${ROOT}`);
 }
 
-process.stdout.write(`  ✓ git data collected (${shortlog.split("\n").length} contributors, ${logOneline.split("\n").length} commits)\n`);
+// Derive author list dynamically from shortlog output
+// Each line looks like: "   127 Author Name"
+const authors: string[] = shortlog
+  .split("\n")
+  .map((line) => line.trim().replace(/^\d+\s+/, ""))
+  .filter((name) => name.length > 0 && name !== "(git command failed)");
+
+// Exclude Replit system identities (no meaningful code to sample)
+const SYSTEM_IDENTITIES = new Set(["replit", "agent"]);
+const codeAuthors = authors.filter((a) => !SYSTEM_IDENTITIES.has(a.toLowerCase()));
+
+// Collect per-author stat samples for all code contributors
+const authorSamples: Record<string, string> = {};
+for (const author of codeAuthors) {
+  authorSamples[author] = git(`log HEAD --author="${author}" --pretty=format:"%h %s" --stat -10`);
+}
+
+process.stdout.write(`  ✓ git data collected (${authors.length} contributors, ${logOneline.split("\n").length} commits)\n`);
 
 // ── Collect source file excerpts ──────────────────────────────────────────────
 
@@ -154,21 +168,13 @@ ${logOneline}
 
 ---
 
-## alexpaynex — Sample commits with diff stats (last 10)
+${Object.entries(authorSamples).map(([author, sample]) => `## ${author} — Sample commits with diff stats (last 10)
 
 \`\`\`
-${alexSample}
+${sample}
 \`\`\`
 
----
-
-## Replit Agent — Sample commits with diff stats (last 10)
-
-\`\`\`
-${replitAgentSample}
-\`\`\`
-
----
+---`).join("\n\n")}
 
 ## Key Source File Excerpts
 
@@ -221,11 +227,9 @@ ${shortlog}
 FULL COMMIT LOG:
 ${logOneline}
 
-ALEXPAYNEX — LAST 10 COMMITS WITH STATS:
-${alexSample}
-
-REPLIT AGENT — LAST 10 COMMITS WITH STATS:
-${replitAgentSample}
+${Object.entries(authorSamples).map(([author, sample]) =>
+  `${author.toUpperCase()} — LAST 10 COMMITS WITH STATS:\n${sample}`
+).join("\n\n")}
 
 KEY SOURCE FILES:
 
@@ -302,7 +306,7 @@ async function callClaude(systemPrompt: string, userContent: string): Promise<st
 async function main(): Promise<void> {
   if (STUB_MODE) {
     process.stdout.write(
-      "\nWarning: AI_INTEGRATIONS_ANTHROPIC_BASE_URL / ANTHROPIC_API_KEY not set — writing stub Timmy report.\n",
+      "\nWarning: AI_INTEGRATIONS_ANTHROPIC_BASE_URL / AI_INTEGRATIONS_ANTHROPIC_API_KEY not set — writing stub Timmy report.\n",
     );
     const stubReport = `# Timmy's Rubric Report (Stub Mode)
 
@@ -321,6 +325,25 @@ pnpm --filter @workspace/scripts timmy-report
   process.stdout.write("\nCalling Claude (claude-haiku-4-5) for Timmy's report…\n");
   const timmyReport = await callClaude(TIMMY_SYSTEM, userPrompt);
 
+  // Post-generation sanity check — catch malformed or truncated model outputs early
+  // Match case-insensitively since Claude may use "PART 1" or "Part 1"
+  const REQUIRED_SECTIONS = ["part 1", "part 2", "part 3"];
+  const lowerReport = timmyReport.toLowerCase();
+  const missingSections = REQUIRED_SECTIONS.filter((s) => !lowerReport.includes(s));
+  const MIN_LINES = 30;
+  const actualLines = timmyReport.split("\n").length;
+
+  if (missingSections.length > 0) {
+    process.stderr.write(
+      `Warning: timmy-report.md is missing sections: ${missingSections.join(", ")} — model output may be malformed.\n`,
+    );
+  }
+  if (actualLines < MIN_LINES) {
+    process.stderr.write(
+      `Warning: timmy-report.md has only ${actualLines} lines (expected ≥${MIN_LINES}) — model output may be truncated.\n`,
+    );
+  }
+
   const header = `# Timmy's Rubric Report
 ## Repo: \`replit/token-gated-economy\` (Timmy Tower World)
 
@@ -333,7 +356,7 @@ pnpm --filter @workspace/scripts timmy-report
 `;
 
   writeFileSync(join(ROOT, "reports/timmy-report.md"), header + timmyReport, "utf8");
-  process.stdout.write("  ✓ reports/timmy-report.md written\n\nDone. Both reports are in reports/\n");
+  process.stdout.write(`  ✓ reports/timmy-report.md written (${actualLines} lines)\n\nDone. Both reports are in reports/\n`);
 }
 
 main().catch((err) => {