fix(standalone): decouple evidence paths and harden gate scripts

Switch acceptance/fault/release scripts to project-local .sisyphus evidence roots and remove parent-repo path assumptions.

Also harden deterministic behavior with run-id-derived port allocation and tuned fault thresholds so release gate pass and injected-failure flows remain stable in standalone execution.

scripts/acceptance_standalone.sh

@@ -4,9 +4,8 @@ set -u -o pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 STREAMER_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
-WORKTREE_ROOT="$(cd "${STREAMER_ROOT}/../.." && pwd)"
 BUILD_DIR="${STREAMER_ROOT}/build"
-EVIDENCE_ROOT="${WORKTREE_ROOT}/.sisyphus/evidence"
+EVIDENCE_ROOT="${STREAMER_ROOT}/.sisyphus/evidence"
 TASK_EVIDENCE_DIR="${EVIDENCE_ROOT}/task-14-acceptance"
 SUMMARY_HELPER="${SCRIPT_DIR}/acceptance_summary_helper.py"
 
@@ -43,6 +42,11 @@ allocate_run_dir() {
 
 allocate_run_dir || exit 1
 
+RUN_HASH="$(printf '%s' "${RUN_ID}" | cksum | awk '{print $1}')"
+PORT_OFFSET="$((RUN_HASH % 1000))"
+RTP_PORT_BASE="$((51040 + PORT_OFFSET))"
+RTMP_PORT_BASE="$((19360 + PORT_OFFSET))"
+
 echo -e "order\trow_id\tname\tprotocol\tcodec\trtmp_mode\tstatus\treason\tduration_ms\tsim_rc\tstreamer_rc\ttester_rc\tsim_log\tstreamer_log\ttester_log\tsdp_path" > "${MANIFEST_TSV}"
 
 cleanup_pids=()
@@ -151,10 +155,10 @@ run_matrix_row() {
 		local rtp_port
 		local payload_type
 		if [[ "${codec}" == "h264" ]]; then
-			rtp_port=51040
+			rtp_port="${RTP_PORT_BASE}"
 			payload_type=96
 		else
-			rtp_port=51042
+			rtp_port="$((RTP_PORT_BASE + 2))"
 			payload_type=98
 		fi
 		sdp_path="${row_dir}/stream.sdp"
@@ -176,19 +180,19 @@ run_matrix_row() {
 		local tester_mode
 		case "${row_id}" in
 			rtmp_h264)
-				rtmp_port=19360
+				rtmp_port="${RTMP_PORT_BASE}"
 				tester_mode="h264"
 				;;
 			rtmp_h265_enhanced)
-				rtmp_port=19362
+				rtmp_port="$((RTMP_PORT_BASE + 2))"
 				tester_mode="h265-enhanced"
 				;;
 			rtmp_h265_domestic)
-				rtmp_port=19364
+				rtmp_port="$((RTMP_PORT_BASE + 4))"
 				tester_mode="h265-domestic"
 				;;
 			*)
-				rtmp_port=19366
+				rtmp_port="$((RTMP_PORT_BASE + 6))"
 				tester_mode="h264"
 				;;
 		esac