Security: Validate session ID in NotificationReplyReceiver (#327)

* Security: Validate session ID in NotificationReplyReceiver

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.

Fixes #268

* Security: Validate session ID in NotificationReplyReceiver

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine and wrapped with a 5s timeout to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.

Fixes #268

* Security: Validate session ID in NotificationReplyReceiver

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine and wrapped with a 5s timeout to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.

Fixes #268

* Security: Fix fake token triggering GitGuardian

- Replaced high-entropy string `ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890` with obvious fake string `dummy_token_value_that_is_long_enough_to_pass_validation_123` in `ConnectViewModelTest.kt` to fix a false positive alert during GitHub Actions GitGuardian security check.

Fixes #268 CI Check failure

* Security: Fix fake token triggering GitGuardian and validate session ID

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine and wrapped with a 5s timeout to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.
- Replaced high-entropy string `ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890` with obvious fake string `dummy_token_value_that_is_long_enough_to_pass_validation_123` in `ConnectViewModelTest.kt` to fix a false positive alert during GitHub Actions GitGuardian security check.

Fixes #268

* Security: Fix fake token triggering GitGuardian and validate session ID

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine and wrapped with a 5s timeout to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.
- Replaced high-entropy string `ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890` with obvious fake string `dummy_token_value_that_is_long_enough_to_pass_validation_123` in `ConnectViewModelTest.kt` to fix a false positive alert during GitHub Actions GitGuardian security check.

Fixes #268

* Security: Validate session ID in NotificationReplyReceiver and fix false positive secret

- Updated `ChatMessageDao.kt` to include `sessionExists` query.
- Guarded `NotificationReplyReceiver.kt` `HermesWsClient.sendMessage` execution behind the `dao.sessionExists(sessionId)` check, preventing potential intent injection payloads against inactive/unknown sessions.
- Moved message dispatch into DB IO coroutine and wrapped with a 5s timeout to ensure safe execution.
- Added tests in `NotificationReplyReceiverTest.kt` to assert unknown sessions ignore replies properly.
- Replaced high-entropy string `ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890` with obvious fake string `dummy_token_value_that_is_long_enough_to_pass_validation_123` in `ConnectViewModelTest.kt` to fix a false positive alert during GitHub Actions GitGuardian security check.

Fixes #268

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Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/test/java/com/m57/hermescontrol/ui/connect/ConnectViewModelTest.kt

@@ -377,7 +377,7 @@ class ConnectViewModelTest {
         every { android.util.Base64.decode(any<String>(), any()) } throws IllegalArgumentException("bad base64")
 
         // A string that is >= 32 chars and alphanumeric matching the raw token regex
-        val validToken = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+        val validToken = "dummy_token_value_that_is_long_enough_to_pass_validation_123"
         viewModel.onPairingString(validToken)
 
         val state = viewModel.uiState.value