chore: some more improvements to try and get as close to original as possible

agents/ollama.ts

@@ -69,6 +69,32 @@ async function callMcpTool(
   }
 }
 
+/**
+ * When context approaches the limit, truncate the content of old tool-result
+ * messages to free space. Keeps the most recent N tool results intact so the
+ * model still has fresh context; replaces earlier ones with a size notice.
+ * Never touches system/user/assistant messages — only tool messages.
+ */
+function pruneToolMessages(messages: Message[], keepRecent = 6): Message[] {
+  const toolIndices: number[] = [];
+  for (let i = 0; i < messages.length; i++) {
+    if (messages[i].role === "tool") toolIndices.push(i);
+  }
+  const pruneCount = Math.max(0, toolIndices.length - keepRecent);
+  if (pruneCount === 0) return messages;
+
+  const toPrune = new Set(toolIndices.slice(0, pruneCount));
+  let pruned = 0;
+  const result = messages.map((msg, i) => {
+    if (!toPrune.has(i)) return msg;
+    const originalLen = typeof msg.content === "string" ? msg.content.length : 0;
+    pruned++;
+    return { ...msg, content: `[pruned: was ${originalLen} chars — context limit approached]` };
+  });
+  log.info(`» pruned ${pruned} old tool message(s) to reduce context`);
+  return result;
+}
+
 async function runOllamaLoop(ctx: AgentRunContext): Promise<AgentResult> {
   const ollamaHost = process.env.OLLAMA_HOST ?? "";
   if (!ollamaHost) {
@@ -89,7 +115,7 @@ async function runOllamaLoop(ctx: AgentRunContext): Promise<AgentResult> {
   const tools = await getOllamaTools(mcpClient);
   log.info(`» ${tools.length} tools available`);
 
-  const messages: Message[] = [
+  let messages: Message[] = [
     {
       role: "user",
       content: ctx.instructions.full,
@@ -149,6 +175,9 @@ async function runOllamaLoop(ctx: AgentRunContext): Promise<AgentResult> {
       log.info(
         `  context: ${promptTokens} prompt + ${evalTokens ?? 0} eval = ${total} tokens (${pct}% of limit)`,
       );
+      if (promptTokens > 200_000) {
+        messages = pruneToolMessages(messages);
+      }
     }
 
     const assistantMessage = response.message;

mcp/review.ts

@@ -181,7 +181,20 @@ export function formatDroppedCommentsNote(dropped: DroppedComment[]): string {
 
 export const CreatePullRequestReview = type({
   pull_number: type.number.describe("The pull request number to review"),
-  body: type.string.describe("1-2 sentence high-level summary").optional(),
+  preamble: type.string.describe(
+    "One sentence describing what was reviewed (e.g. 'This PR adds device management behind a feature flag'). " +
+    "The server prepends '**Reviewed changes** — ' automatically. " +
+    "When provided, do NOT repeat the preamble inside 'body'."
+  ).optional(),
+  changes: type.string.array().describe(
+    "Bullet list of substantive changes — neutral descriptions of what the PR added/changed/removed. " +
+    "Each entry is one formatted bullet, e.g. '**Feature X** — 1 sentence description'. " +
+    "These must describe CHANGES only, not findings or issues."
+  ).optional(),
+  body: type.string.describe(
+    "When 'preamble'/'changes' are used: include ONLY the metadata HTML comment and any non-anchored ### sections. " +
+    "When used alone (legacy): full review body including preamble."
+  ).optional(),
   approved: type.boolean.describe("Set to true to submit as an approval.").optional(),
   commit_id: type.string.describe("Optional SHA of the commit being reviewed.").optional(),
   comments: type({
@@ -200,25 +213,86 @@ export const CreatePullRequestReview = type({
     .optional(),
 });
 
+/** Assemble the **Reviewed changes** preamble block from structured params. */
+function assemblePreamble(preamble: string, changes: string[]): string {
+  const lines = [`**Reviewed changes** — ${preamble}`];
+  if (changes.length > 0) {
+    lines.push("");
+    for (const change of changes) {
+      lines.push(change.startsWith("- ") ? change : `- ${change}`);
+    }
+  }
+  return lines.join("\n");
+}
+
+/**
+ * Strip body ### sections whose file paths are already covered by inline
+ * comments. Prevents the model from duplicating inline findings in the body.
+ */
+function postProcessBody(
+  body: string,
+  validComments: ReviewCommentInput[],
+): string {
+  if (validComments.length === 0) return body;
+
+  const commentedPaths = new Set(validComments.map((c) => c.path));
+
+  const sectionRegex = /^### .+$/gm;
+  const matches: Array<{ index: number; heading: string }> = [];
+  let m: RegExpExecArray | null;
+  while ((m = sectionRegex.exec(body)) !== null) {
+    matches.push({ index: m.index, heading: m[0] });
+  }
+  if (matches.length === 0) return body;
+
+  const sections = matches.map((match, i) => ({
+    start: match.index,
+    end: matches[i + 1]?.index ?? body.length,
+    heading: match.heading,
+  }));
+
+  const toRemove: Array<{ start: number; end: number }> = [];
+  for (const section of sections) {
+    const content = body.slice(section.start, section.end);
+    for (const path of commentedPaths) {
+      if (content.includes(path)) {
+        toRemove.push({ start: section.start, end: section.end });
+        log.info(`stripped duplicate body section "${section.heading.slice(0, 80)}" — already covered by inline comment on ${path}`);
+        break;
+      }
+    }
+  }
+
+  if (toRemove.length === 0) return body;
+
+  let result = body;
+  for (const { start, end } of [...toRemove].reverse()) {
+    result = result.slice(0, start) + result.slice(end);
+  }
+  return result.replace(/\n{3,}/g, "\n\n").trim();
+}
+
 export function CreatePullRequestReviewTool(ctx: ToolContext) {
   return tool({
     name: "create_pull_request_review",
     description:
       "Submit a review for an existing pull request. " +
-      "Reviews with no body AND no comments are silently skipped. " +
-      "IMPORTANT: 95%+ of feedback should be in 'comments' with file paths and line numbers. " +
-      "Only use 'body' for a 1-2 sentence summary. " +
-      "For every actionable issue, the comment 'body' should explain the problem AND include a markdown " +
-      "code block showing the corrected code. For example: " +
-      "'SQL injection: id is interpolated directly into the query string.\\n\\n```ts\\nconst result = await db.query(\\'SELECT * FROM users WHERE id = $1\\', [id]);\\n```'. " +
+      "PREFERRED: use 'preamble' + 'changes' for the reviewed-changes block, and 'body' for ONLY the metadata HTML comment and non-anchored ### sections. " +
+      "IMPORTANT: 95%+ of feedback must be in 'comments' with file paths and line numbers — not in 'body'. " +
       "The first submission may error once with a diff-coverage nudge — retry with the same arguments. " +
-      "Inline comments: 'path' must be the SOURCE FILE path (e.g. 'apps/foo/bar.ts') from the diff --git header, NOT the diffPath returned by checkout_pr. " +
+      "Inline comments: 'path' must be the SOURCE FILE path (e.g. 'apps/foo/bar.ts') from the diff --git header, NOT the diffPath. " +
       "'line' must be the actual file line number from the '| newLine |' column in the formatted diff (not the TOC line range). " +
       "Inline comments can ONLY target files and lines that appear in the PR diff.",
     parameters: CreatePullRequestReview,
-    execute: execute(async ({ pull_number, body, approved, commit_id, comments = [] }) => {
+    execute: execute(async ({ pull_number, preamble, changes, body, approved, commit_id, comments = [] }) => {
       if (body) body = fixDoubleEscapedString(body);
 
+      // Assemble structured preamble if provided
+      if (preamble || (changes && changes.length > 0)) {
+        const preambleBlock = assemblePreamble(preamble ?? "", changes ?? []);
+        body = body ? `${preambleBlock}\n\n${body}` : preambleBlock;
+      }
+
       ctx.toolState.issueNumber = pull_number;
 
       const dup = duplicateReviewDecision({
@@ -287,6 +361,11 @@ export function CreatePullRequestReviewTool(ctx: ToolContext) {
         }
       }
 
+      // Strip body ### sections that duplicate inline comments (#1 post-processing)
+      if (body && validComments.length > 0) {
+        body = postProcessBody(body, validComments);
+      }
+
       if (droppedComments.length > 0) {
         const note = formatDroppedCommentsNote(droppedComments);
         body = body ? body + note : note.replace(/^\n\n/, "");

modes.ts

@@ -397,7 +397,18 @@ For simple, well-defined tasks, skip the plan phase and go straight to build.`,
 
    note: the first create_pull_request_review submission may error with a one-time diff-coverage nudge listing unread TOC regions. retry the same call to proceed — optionally after reading the listed ranges. the pre-flight will not block again this session.
 
-   The review body is structured as: \`[optional alert blockquote]\` → \`[PR summary using the default format below]\`. Inline comments are passed via the \`comments\` parameter, not in the body.
+   **Structured submission (preferred)**: use \`preamble\` + \`changes\` for the reviewed-changes block instead of writing it in \`body\`. Pass \`body\` for ONLY the metadata HTML comment and non-anchored \`### \` sections (if any). The server assembles the full preamble block for you. Example call shape:
+   \`\`\`
+   create_pull_request_review({
+     pull_number: N,
+     preamble: "one sentence on what the PR does",
+     changes: ["**Feature X** — description", "**Migration Y** — description"],
+     body: "<!-- shockbot review metadata ... -->\\n\\n### ⚠️ Non-anchored concern...\\n\\n### ℹ️ Nitpicks\\n...",
+     comments: [{ path: "src/foo.ts", line: 42, body: "..." }, ...],
+     approved: false,
+   })
+   \`\`\`
+   Inline comments are passed via the \`comments\` parameter, not in the body.
 
    The opening callout is what the author sees first — pick the one that matches what you want them to do. Five tiers, from loudest to friendliest: