fix(tools/git/pr-ci-wait): stdin collision in python3 - <<PY made wrapper always return "unknown"

When the wrapper invoked `python3 - <<'PY' ... PY` inside a function that
was being fed JSON via a pipe (`printf '%s' "$STATUS_JSON" |
extract_state_from_status_json`), the heredoc bound stdin to the Python
program text. The `-` argument tells Python to read its program from
stdin, so the program consumed stdin before json.load(sys.stdin) ran —
which then saw EOF and bailed to the "unknown" branch every time.

Result: pr-ci-wait.sh hung the full timeout (default 30 min) even when
the upstream Gitea status was already 'success', because every poll
returned 'unknown' and the loop kept retrying.

Fix: capture the piped JSON into a local variable with `payload=$(cat)`
BEFORE invoking python, then pass it via env (PR_CI_STATUS_JSON). The
heredoc still drives the Python program, but the payload is now read
from the environment instead of a stdin that's already been consumed.

Same fix applied to print_status_summary() which has the identical
pattern.

Verified locally:
  $ echo '{"state":"success"}' | extract_state_from_status_json → success
  $ echo '' | extract_state_from_status_json → unknown
  $ echo '{"state":null,"statuses":[{"state":"success"}]}' | … → success
  $ echo '{"state":"pending"}' | extract_state_from_status_json → pending
  $ echo '{"state":"failure"}' | extract_state_from_status_json → failure

Reported in screenshot from operator session 2026-05-13 — wrapper was
stuck waiting on a PR whose underlying Gitea status was already
success. Operator workaround was to bypass the wrapper and use the raw
Gitea API.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/mosaic/framework/tools/_lib/credentials.sh

@@ -52,20 +52,6 @@ _mosaic_sync_woodpecker_env() {
   printf '%s\n' "$expected" > "$env_file"
 }
 
-# Load legacy flat Woodpecker credentials (.woodpecker.url / .woodpecker.token).
-# Some environments export WOODPECKER_INSTANCE=mosaic, but the current
-# credentials.json may still use the legacy flat schema. Treat "mosaic" as the
-# default flat instance when a nested .woodpecker.mosaic object is absent.
-_mosaic_load_woodpecker_legacy() {
-  export WOODPECKER_URL="$(_mosaic_read_cred '.woodpecker.url')"
-  export WOODPECKER_TOKEN="$(_mosaic_read_cred '.woodpecker.token')"
-  export WOODPECKER_INSTANCE="${WOODPECKER_INSTANCE:-mosaic}"
-  WOODPECKER_URL="${WOODPECKER_URL%/}"
-  [[ -n "$WOODPECKER_URL" ]] || { echo "Error: woodpecker.url not found" >&2; return 1; }
-  [[ -n "$WOODPECKER_TOKEN" ]] || { echo "Error: woodpecker.token not found" >&2; return 1; }
-  _mosaic_sync_woodpecker_env "$WOODPECKER_INSTANCE" "$WOODPECKER_URL" "$WOODPECKER_TOKEN"
-}
-
 load_credentials() {
   local service="$1"
 
@@ -169,14 +155,7 @@ EOF
       ;;
     woodpecker-*)
       local wp_instance="${service#woodpecker-}"
-      # credentials.json is authoritative — always read from it, ignore env.
-      # Backward compatibility: the default Mosaic Woodpecker instance may be
-      # stored in the legacy flat schema (.woodpecker.url/.token) instead of
-      # .woodpecker.mosaic.url/.token.
-      if [[ "$wp_instance" == "mosaic" ]] && [[ -z "$(_mosaic_read_cred '.woodpecker.mosaic.url')" ]] && [[ -n "$(_mosaic_read_cred '.woodpecker.url')" ]]; then
-        WOODPECKER_INSTANCE="mosaic" _mosaic_load_woodpecker_legacy
-        return $?
-      fi
+      # credentials.json is authoritative — always read from it, ignore env
       export WOODPECKER_URL="$(_mosaic_read_cred ".woodpecker.${wp_instance}.url")"
       export WOODPECKER_TOKEN="$(_mosaic_read_cred ".woodpecker.${wp_instance}.token")"
       export WOODPECKER_INSTANCE="$wp_instance"
@@ -187,10 +166,7 @@ EOF
       _mosaic_sync_woodpecker_env "$wp_instance" "$WOODPECKER_URL" "$WOODPECKER_TOKEN"
       ;;
     woodpecker)
-      # Resolve default instance, then load it. If WOODPECKER_INSTANCE is set to
-      # "mosaic" by a shell/profile but credentials.json still uses the legacy
-      # flat .woodpecker.url/.token schema, load the flat credentials instead of
-      # failing with "woodpecker.mosaic.url not found".
+      # Resolve default instance, then load it
       local wp_default
       wp_default="${WOODPECKER_INSTANCE:-$(_mosaic_read_cred '.woodpecker.default')}"
       if [[ -z "$wp_default" ]]; then
@@ -198,18 +174,18 @@ EOF
         local legacy_url
         legacy_url="$(_mosaic_read_cred '.woodpecker.url')"
         if [[ -n "$legacy_url" ]]; then
-          _mosaic_load_woodpecker_legacy
+          export WOODPECKER_URL="${WOODPECKER_URL:-$legacy_url}"
+          export WOODPECKER_TOKEN="${WOODPECKER_TOKEN:-$(_mosaic_read_cred '.woodpecker.token')}"
+          WOODPECKER_URL="${WOODPECKER_URL%/}"
+          [[ -n "$WOODPECKER_URL" ]] || { echo "Error: woodpecker.url not found" >&2; return 1; }
+          [[ -n "$WOODPECKER_TOKEN" ]] || { echo "Error: woodpecker.token not found" >&2; return 1; }
         else
           echo "Error: woodpecker.default not set and no WOODPECKER_INSTANCE env var" >&2
           echo "Available instances: $(jq -r '.woodpecker | keys | join(", ")' "$MOSAIC_CREDENTIALS_FILE" 2>/dev/null)" >&2
           return 1
         fi
       else
-        if [[ "$wp_default" == "mosaic" ]] && [[ -z "$(_mosaic_read_cred '.woodpecker.mosaic.url')" ]] && [[ -n "$(_mosaic_read_cred '.woodpecker.url')" ]]; then
-          WOODPECKER_INSTANCE="mosaic" _mosaic_load_woodpecker_legacy
-        else
-          load_credentials "woodpecker-${wp_default}"
-        fi
+        load_credentials "woodpecker-${wp_default}"
       fi
       ;;
     cloudflare-*)

packages/mosaic/framework/tools/git/pr-ci-wait.sh

@@ -30,12 +30,19 @@ EOF
 # get_remote_host and get_gitea_token are provided by detect-platform.sh
 
 extract_state_from_status_json() {
-    python3 - <<'PY'
+    # Capture piped JSON BEFORE invoking `python3 - <<PY`. The heredoc binds
+    # stdin to the Python program text — so json.load(sys.stdin) inside would
+    # try to re-read stdin after `-` already consumed it for the program,
+    # yielding EOF and returning "unknown" every time. Pass payload via env.
+    local payload
+    payload=$(cat)
+    PR_CI_STATUS_JSON="$payload" python3 - <<'PY'
 import json
+import os
 import sys
 
 try:
-    payload = json.load(sys.stdin)
+    payload = json.loads(os.environ.get("PR_CI_STATUS_JSON", ""))
 except Exception:
     print("unknown")
     raise SystemExit(0)
@@ -66,12 +73,16 @@ PY
 }
 
 print_status_summary() {
-    python3 - <<'PY'
+    # Same stdin-collision fix as extract_state_from_status_json above.
+    local payload
+    payload=$(cat)
+    PR_CI_STATUS_JSON="$payload" python3 - <<'PY'
 import json
+import os
 import sys
 
 try:
-    payload = json.load(sys.stdin)
+    payload = json.loads(os.environ.get("PR_CI_STATUS_JSON", ""))
 except Exception:
     print("[pr-ci-wait] status payload unavailable")
     raise SystemExit(0)

packages/mosaic/framework/tools/woodpecker/pipeline-list.sh

@@ -50,7 +50,7 @@ REPO_ID=$(wp_resolve_repo_id "$REPO") || exit 1
 
 response=$(curl -sk -w "\n%{http_code}" \
   -H "Authorization: Bearer $WOODPECKER_TOKEN" \
-  "${WOODPECKER_URL}/api/repos/${REPO_ID}/pipelines?perPage=${LIMIT}")
+  "${WOODPECKER_URL}/api/repos/${REPO_ID}/pipelines?per_page=${LIMIT}")
 
 http_code=$(echo "$response" | tail -n1)
 body=$(echo "$response" | sed '$d')

packages/mosaic/framework/tools/woodpecker/pipeline-status.sh

@@ -64,7 +64,7 @@ _wp_fetch() {
 
 if [[ -z "$NUMBER" ]]; then
   # Get latest pipeline number from list, then fetch full detail
-  list_body=$(_wp_fetch "${WOODPECKER_URL}/api/repos/${REPO_ID}/pipelines?perPage=1") || exit 1
+  list_body=$(_wp_fetch "${WOODPECKER_URL}/api/repos/${REPO_ID}/pipelines?per_page=1") || exit 1
   NUMBER=$(echo "$list_body" | jq -r '.[0].number // empty')
   if [[ -z "$NUMBER" ]]; then
     echo "Error: No pipelines found" >&2