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/fault_suite.sh

@@ -4,10 +4,9 @@ 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="${EVIDENCE_ROOT}/task-15-fault-suite"
 SUMMARY_HELPER="${SCRIPT_DIR}/fault_summary_helper.py"
 
@@ -77,6 +76,14 @@ allocate_run_dir() {
 
 allocate_run_dir || exit 1
 
+RUN_HASH="$(printf '%s' "${RUN_ID}" | cksum | awk '{print $1}')"
+PORT_OFFSET="$((RUN_HASH % 1000))"
+if [[ "${MODE}" == "baseline" ]]; then
+	SCENARIO_PORT_BASE="$((52040 + PORT_OFFSET))"
+else
+	SCENARIO_PORT_BASE="$((52140 + PORT_OFFSET))"
+fi
+
 echo -e "order\tscenario_id\tname\tstatus\treason\tduration_ms\tsim_rc\tstreamer_rc\ttester_rc\tsim_log\tstreamer_log\ttester_log\tsdp_path" > "${MANIFEST_TSV}"
 
 cleanup_pids=()
@@ -134,11 +141,7 @@ append_manifest_row() {
 
 scenario_port() {
 	local order="$1"
-	if [[ "${MODE}" == "baseline" ]]; then
-		echo $((52040 + (order - 1) * 2))
-	else
-		echo $((52140 + (order - 1) * 2))
-	fi
+	echo $((SCENARIO_PORT_BASE + (order - 1) * 2))
 }
 
 run_fault_scenario() {