[skills] Fix REVIEW-MEDIUM-2: drop dead buildSessionSummary + docs promise

Why: buildSessionSummary was computed but never POSTed, and README and
SKILL.md both promised a separately-captured summary thought that the
code never delivered — a documentation lie. Delete the dead function,
its call site, and the corresponding bullet points from both docs.
Implementing a second POST was rejected: one POST per session is the
simpler, correct shape and downstream thought extraction already
produces its own summarization.

Author: alanshurafa

skills/auto-capture-claude-code/README.md

@@ -15,8 +15,7 @@ The adapter installs as a Claude Code `Stop` hook. When a session ends:
 1. The hook script reads the session transcript
 2. Short sessions (< 3 user turns), agent-only sessions, and restricted content are skipped
 3. The formatted transcript is POSTed to the Open Brain ingest endpoint for thought extraction
-4. A session summary is captured as a journal entry
-5. Failed captures are saved to a retry queue and retried on subsequent session ends
+4. Failed captures are saved to a retry queue and retried on subsequent session ends
 
 ## Prerequisites
 

skills/auto-capture-claude-code/SKILL.md

@@ -45,8 +45,7 @@ Together they ensure no valuable session falls through the cracks.
    short or agent-only sessions, and formats the content.
 3. The formatted transcript is POSTed to the Open Brain REST ingest endpoint
    (or smart-ingest edge function) for automatic thought extraction.
-4. A session summary thought is captured separately as a journal entry.
-5. Failed captures are saved to a local retry queue and retried on subsequent
+4. Failed captures are saved to a local retry queue and retried on subsequent
    session ends.
 
 ## Skip Heuristics
@@ -124,7 +123,6 @@ When working correctly:
 
 - Every meaningful Claude Code session (3+ user turns, non-agent, non-restricted)
   is automatically ingested into Open Brain for thought extraction.
-- A session summary journal entry is captured alongside the full transcript.
 - Failed captures are queued locally and retried on subsequent session ends.
 - Short, agent, and restricted sessions are silently skipped.
 - All outcomes are logged to `logs/ambient-capture.log` for debugging.

skills/auto-capture-claude-code/session-end-capture.mjs

@@ -163,23 +163,6 @@ function formatTranscript(parsed, projectName) {
   return `${header}\n\n<thought_content>\n${body}\n</thought_content>`;
 }
 
-function buildSessionSummary(parsed, projectName) {
-  const topics = new Set();
-  for (const t of parsed.turns) {
-    if (t.role === "human") {
-      // Extract potential topic keywords from user messages
-      const words = t.content.toLowerCase().split(/\s+/).filter(w => w.length > 4);
-      for (const w of words.slice(0, 5)) topics.add(w);
-    }
-  }
-
-  return [
-    `Claude Code session on ${projectName}`,
-    `(${parsed.gitBranch || "unknown branch"}, ${parsed.userTurns} turns).`,
-    parsed.createdAt ? `Started: ${parsed.createdAt}.` : "",
-  ].filter(Boolean).join(" ");
-}
-
 // ── Import key (idempotency) ────────────────────────────────────────────────
 
 function buildImportKey(sessionId, formattedText) {
@@ -335,9 +318,8 @@ async function main() {
     process.exit(0);
   }
 
-  // 6. Format transcript and build summary
+  // 6. Format transcript and compute idempotency key
   const formattedText = formatTranscript(parsed, projectName);
-  const sessionSummary = buildSessionSummary(parsed, projectName);
   const importKey = buildImportKey(parsed.sessionId, formattedText);
 
   // 7. Load env and POST to ingest endpoint