VSCode CoPilot changes

Author: pljones

tools/backfill-release-announcement.sh

@@ -58,8 +58,10 @@
 #                  the GitHub Models API rate limit (≈15 requests/minute on
 #                  the free tier).  Example: DELAY_SECS=5
 #
-# The script calls the GitHub Models API (openai/gpt-4o-mini) to produce a
+# The script calls the GitHub Models API (openai/gpt-4o) to produce a
 # user-friendly summary for each PR and adds it to the announcement document.
+# For each PR, it fetches the full discussion thread (body, comments, reviews)
+# and feeds it directly to the AI along with the current announcement.
 # Changes that are not user-facing (CI, build tooling, code style, routine
 # dependency bumps) are omitted by the AI automatically.
 #
@@ -368,73 +370,6 @@ print("\n\n".join(parts), end="")
 '
 }
 
-# summarize_pr_thread PR_NUMBER PR_TITLE PR_AUTHOR THREAD_TEXT
-#   Calls the AI to produce a concise factual summary of the full PR thread.
-#   Prints the summary to stdout.  Returns 1 on failure.
-summarize_pr_thread() {
-    local pr_number="$1"
-    local pr_title="$2"
-    local pr_author="$3"
-    local thread_text="$4"
-
-    local summary_prompt
-    summary_prompt='You are a technical writer summarising a GitHub Pull Request for use in a release announcement.
-
-Given the full PR thread below (description, discussion comments, and code reviews), write a concise factual summary (under 300 words) that captures:
-1. **What changed**: the concrete code/feature/behaviour change in its final form
-2. **Why**: the motivation or problem being solved
-3. **User impact**: how this affects people who use the software
-
-Focus on the FINAL outcome, not the evolution of the discussion.  If reviewers suggested changes that were adopted, describe the end result, not the back-and-forth.
-
-Ignore: CI bot comments, merge-conflict chatter, style nits, "LGTM" reviews without substantive body text, and process comments (like labelling or milestone changes).'
-
-    local user_content
-    user_content=$(printf 'PR #%s — %s\nby @%s\n\nFull PR thread:\n%s' \
-        "$pr_number" "$pr_title" "$pr_author" "$thread_text")
-
-    local payload
-    payload=$(jq -n \
-        --arg model  "$MODEL" \
-        --arg system "$summary_prompt" \
-        --arg user   "$user_content" \
-        '{
-            model: $model,
-            messages: [
-                { role: "system", content: $system },
-                { role: "user",   content: $user   }
-            ],
-            max_completion_tokens: 2048,
-            temperature: 0.1
-        }')
-
-    local tmpfile http_code response summary
-    tmpfile=$(mktemp)
-    http_code=$(curl -s \
-        -o "$tmpfile" \
-        -w '%{http_code}' \
-        -X POST "$MODELS_ENDPOINT" \
-        -H "Authorization: Bearer ${GITHUB_TOKEN}" \
-        -H "Content-Type: application/json" \
-        -d "$payload") 2>/dev/null || true
-
-    response=$(cat "$tmpfile" 2>/dev/null || true)
-    rm -f "$tmpfile"
-
-    if [[ "$http_code" != "200" ]]; then
-        warn "HTTP ${http_code} from Models API during PR thread summarisation."
-        return 1
-    fi
-
-    summary=$(jq -r '.choices[0].message.content // empty' <<< "$response")
-    if [[ -z "$summary" ]]; then
-        warn "Model returned empty summary."
-        return 1
-    fi
-
-    printf '%s' "$summary"
-}
-
 call_model_api() {
     # Arguments:
     #   $1  current announcement text
@@ -546,26 +481,19 @@ for row in $(jq -r '.[] | @base64' <<< "$PR_JSON"); do
         continue
     fi
 
-    # ── fetch and summarise the full PR thread ────────────────────────────
+    # ── fetch the full PR thread ───────────────────────────────────────────
     info "Fetching full PR thread for #${pr_number}…"
     thread_text=$(fetch_pr_thread "$pr_number") || true
     if [[ -n "$thread_text" ]]; then
-        info "Fetched PR thread ($(printf '%s' "$thread_text" | wc -c | tr -d ' ') bytes). Summarising…"
-        pr_summary=$(summarize_pr_thread "$pr_number" "$pr_title" "$pr_author" "$thread_text") || true
-        if [[ -z "$pr_summary" ]]; then
-            info "Could not summarise PR thread — using PR body only."
-            pr_summary="$pr_body"
-        else
-            info "Generated PR thread summary."
-        fi
+        info "Fetched PR thread ($(printf '%s' "$thread_text" | wc -c | tr -d ' ') bytes)."
     else
         info "Could not fetch full PR thread — using PR body only."
-        pr_summary="$pr_body"
+        thread_text="$pr_body"
     fi
 
     # ── build the PR info block ────────────────────────────────────────────
     pr_info=$(printf 'PR #%s — %s\nby @%s\n\n%s\n' \
-        "$pr_number" "$pr_title" "$pr_author" "$pr_summary")
+        "$pr_number" "$pr_title" "$pr_author" "$thread_text")
 
     # ── call the AI ────────────────────────────────────────────────────────
     current_announcement=$(cat "$ANNOUNCEMENT_FILE")