fix(usage): account for Anthropic cache write TTLs

Parse and retain Anthropic's ephemeral 5-minute and 1-hour cache-creation token buckets while preserving the existing aggregate cache-write metric for compatibility.

Price 1-hour writes at the documented premium relative to the configured 5-minute write rate, clamp inconsistent provider details safely, and include TTL buckets in usage diagnostics.

Persist 1-hour cache-write tokens with schema version 14 so zero-cost backfills and later pricing updates retain the original TTL semantics. Keep session import paths compatible through zero-valued detail fields.

src-tauri/src/services/session_usage_opencode.rs

@@ -362,6 +362,8 @@ fn insert_opencode_message(
                 output_tokens: output_with_reasoning,
                 cache_read_tokens: msg.cache_read_tokens,
                 cache_creation_tokens: msg.cache_write_tokens,
+                cache_creation_5m_tokens: 0,
+                cache_creation_1h_tokens: 0,
                 model: Some(msg.model_id.clone()),
                 message_id: None,
             };