release: version 1.0.2 - Audit security fixes and RPM packaging

Security hardening:
- Add input sanitization for method (32), path (2048), host (256), http_version (16)
- Prevent log injection via oversized HTTP values
- Add LOG_THROTTLED macro for consistent error reporting
- Improve socket state double-check pattern to avoid unnecessary reconnects

Code quality:
- Fix const qualifier warnings in get_header()
- Add flags field to module definition
- Add -Wno-error=format-security for compatibility

Documentation:
- Clarify timestamp precision (microseconds expressed as nanoseconds)
- Update README and architecture.yml

Testing:
- Add 4 unit tests for input sanitization
- All 78 tests passing

Packaging:
- Remove DEB package support (RPM only: el8, el9, el10)
- Add CHANGELOG file included in RPM packages
- Bump version to 1.0.2

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

architecture.yml

@@ -79,10 +79,12 @@ module:
           example: "2026-02-26T11:59:30Z"
         - name: timestamp
           type: integer
-          unit: nanoseconds
+          unit: microseconds (expressed as nanoseconds)
           description: >
-            Wall-clock timestamp in nanoseconds since Unix epoch.
-            Note: apr_time_now() returns microseconds, multiplied by 1000 for nanoseconds.
+            Wall-clock timestamp in microseconds since Unix epoch, expressed
+            as nanoseconds for compatibility (multiplied by 1000).
+            Note: apr_time_now() returns microseconds with microsecond precision.
+            The nanosecond representation is for API compatibility only.
           example: 1708948770000000000
         - name: src_ip
           type: string