Fix reporter wraparound and add bounds checks

[jserv]

Reporter tolerance check: (average - 1) wraps to ULONG_MAX when average is 0 (first cycle or short TM_TEST_DURATION runs), producing spurious ERROR messages. Guard with average > 0 before the check.

Reporter snapshot: volatile counters were read multiple times per report cycle: once for the total sum, again for each per-counter tolerance comparison. Workers keep incrementing between reads, making the check self-inconsistent. Snapshot all counters into locals in a single pass, then compute total/average/tolerance from the snapshot.

Porting layer bounds checks: all 13 API entry points in both ThreadX and FreeRTOS ports now validate thread_id, queue_id, semaphore_id, pool_id, and priority range, returning TM_ERROR for out-of-bounds values instead of silently indexing past array ends.

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Summary by cubic

Fixes false ERRORs in test reporters by snapshotting counters and avoiding unsigned wraparound, and adds bounds checks to all port APIs to prevent out-of-range access. Improves correctness on short test runs and hardens the FreeRTOS/ThreadX ports.

• Bug Fixes
  • Reporters: snapshot counters once per cycle and compute total/average/tolerance from the snapshot; skip tolerance checks when average is 0 to avoid (average - 1) underflow. Applies to cooperative, preemptive, interrupt, and interrupt-preemption reports.
  • Ports: validate thread/queue/semaphore/pool IDs and priority range in all 13 FreeRTOS and ThreadX API entry points; return TM_ERROR on invalid input instead of indexing past array bounds.

^{Written for commit b7e37b6. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 6 files

[github-actions]

Thread-Metric Benchmark Results

✅ All tests passed — 47703cf — 2026-03-23T11:08:25Z

Summary

RTOS	Target	OS	Status	Passed	Failed	Total
freertos	cortex-m	ubuntu-24.04	✅ passed	8	0	8
freertos	posix	macos-latest	✅ passed	8	0	8
freertos	posix	ubuntu-24.04	✅ passed	8	0	8
threadx	cortex-m	ubuntu-24.04	✅ passed	8	0	8
threadx	posix	macos-latest	✅ passed	8	0	8
threadx	posix	ubuntu-24.04	✅ passed	8	0	8

Per-Test Results

Test	freertos/cortex-m	freertos/posix	freertos/posix	threadx/cortex-m	threadx/posix	threadx/posix
basic_processing	✅	✅	✅	✅	✅	✅
cooperative_scheduling	✅	✅	✅	✅	✅	✅
preemptive_scheduling	✅	✅	✅	✅	✅	✅
message_processing	✅	✅	✅	✅	✅	✅
synchronization_processing	✅	✅	✅	✅	✅	✅
memory_allocation	✅	✅	✅	✅	✅	✅
interrupt_processing	✅	✅	✅	✅	✅	✅
interrupt_preemption_processing	✅	✅	✅	✅	✅	✅