fix: improve review inline/body discipline and agent reliability

mcp/readFile.ts

@@ -4,7 +4,7 @@ import type { ToolContext } from "./server.ts";
 import { execute, tool } from "./shared.ts";
 
 /** Hard cap on returned content to avoid flooding the model's context window. */
-const MAX_CHARS = 6000;
+const MAX_CHARS = 20000;
 
 export const ReadFileParams = type({
   path: type.string.describe("absolute path to the file to read"),
@@ -17,9 +17,10 @@ export function ReadFileTool(_ctx: ToolContext) {
     name: "read_file",
     description:
       "Read lines from a file. Use this to read sections of the PR diff returned by checkout_pr. " +
-      `Returns at most ${MAX_CHARS} characters — use narrow line ranges to stay within budget. ` +
-      "Read selectively: only the files most relevant to the review, not the entire diff at once. " +
-      "Example: `read_file({ path: diffPath, start_line: 5, end_line: 42 })`.",
+      `Returns at most ${MAX_CHARS} characters. ` +
+      "Prefer fewer, wider reads: read large contiguous ranges rather than many small ones. " +
+      "If the TOC lists 10 files, read 3-4 wide ranges that cover them rather than 10 separate calls. " +
+      "Example: `read_file({ path: diffPath, start_line: 5, end_line: 200 })`.",
     parameters: ReadFileParams,
     execute: execute(async ({ path, start_line, end_line }) => {
       let content: string;

mcp/review.ts

@@ -236,6 +236,11 @@ function postProcessBody(
   if (validComments.length === 0) return body;
 
   const commentedPaths = new Set(validComments.map((c) => c.path));
+  // Also match short filenames (e.g. "data-settings.tsx") since the body often
+  // uses basenames while inline comments store full repo-relative paths.
+  const commentedBasenames = new Set(
+    validComments.map((c) => c.path.split("/").pop() ?? c.path),
+  );
 
   const sectionRegex = /^### .+$/gm;
   const matches: Array<{ index: number; heading: string }> = [];
@@ -254,13 +259,19 @@ function postProcessBody(
   const toRemove: Array<{ start: number; end: number }> = [];
   for (const section of sections) {
     const content = body.slice(section.start, section.end);
+    let matched: string | undefined;
     for (const path of commentedPaths) {
-      if (content.includes(path)) {
-        toRemove.push({ start: section.start, end: section.end });
-        log.info(`stripped duplicate body section "${section.heading.slice(0, 80)}" — already covered by inline comment on ${path}`);
-        break;
+      if (content.includes(path)) { matched = path; break; }
+    }
+    if (!matched) {
+      for (const basename of commentedBasenames) {
+        if (content.includes(basename)) { matched = basename; break; }
       }
     }
+    if (matched) {
+      toRemove.push({ start: section.start, end: section.end });
+      log.info(`stripped duplicate body section "${section.heading.slice(0, 80)}" — already covered by inline comment on ${matched}`);
+    }
   }
 
   if (toRemove.length === 0) return body;