executor: persist log paths at execution create time, not just at end

Add LogPather interface; ClaudeRunner implements it via ExecLogDir().
Pool pre-populates stdout_path/stderr_path/artifact_dir on the execution
record before CreateExecution, so paths are in the DB from the moment
a task starts running.

ClaudeRunner.Run() skips path assignment when already set by the pool.

Also update scripts/debug-execution to derive paths from the known
convention (<data-dir>/executions/<exec-id>/) as a fallback for
historical records that predate this change.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/scripts/debug-execution b/scripts/debug-execution
index eba5c0a..87540b7 100755
--- a/scripts/debug-execution
+++ b/scripts/debug-execution
@@ -6,6 +6,7 @@
 set -euo pipefail
 
 DB="/site/doot.terst.org/data/claudomator.db"
+DATA_DIR="/site/doot.terst.org/data"
 PREFIX="${1:?Usage: $0 <execution-id-or-prefix>}"
 
 if [[ ! -f "$DB" ]]; then
@@ -52,14 +53,17 @@ if [[ -n "$TASK_ROW" ]]; then
   echo "  Working dir: ${WORKING_DIR:-(not set)}"
 fi
 
+# Resolve log paths: use DB value if set, otherwise derive from known convention.
+EXEC_LOG_DIR="${DATA_DIR}/executions/${EXEC_ID}"
+: "${STDOUT_PATH:=${EXEC_LOG_DIR}/stdout.log}"
+: "${STDERR_PATH:=${EXEC_LOG_DIR}/stderr.log}"
+
 # Logs
 print_log() {
   local label="$1" path="$2"
   echo ""
   echo "=== $label ==="
-  if [[ -z "$path" ]]; then
-    echo "  (path not recorded)"
-  elif [[ ! -f "$path" ]]; then
+  if [[ ! -f "$path" ]]; then
     echo "  (file not found: $path)"
   elif [[ ! -s "$path" ]]; then
     echo "  (empty)"