Align SQLite feedback logs with feedback formatter (#13494)

## Summary
- store a pre-rendered `feedback_log_body` in SQLite so `/feedback`
exports keep span prefixes and structured event fields
- render SQLite feedback exports with timestamps and level prefixes to
match the old in-memory feedback formatter, while preserving existing
trailing newlines
- count `feedback_log_body` in the SQLite retention budget so structured
or span-prefixed rows still prune correctly
- bound `/feedback` row loading in SQL with the retention estimate, then
apply exact whole-line truncation in Rust so uploads stay capped without
splitting lines

## Details
- add a `feedback_log_body` column to `logs` and backfill it from
`message` for existing rows
- capture span names plus formatted span and event fields at write time,
since SQLite does not retain enough structure to reconstruct the old
formatter later
- keep SQLite feedback queries scoped to the requested thread plus
same-process threadless rows
- restore a SQL-side cumulative `estimated_bytes` cap for feedback
export queries so over-retained partitions do not load every matching
row before truncation
- add focused formatting coverage for exported feedback lines and parity
coverage against `tracing_subscriber`

## Testing
- cargo test -p codex-state
- just fix -p codex-state
- just fmt

codex author: `codex resume 019ca1b0-0ecc-78b1-85eb-6befdd7e4f1f`

---------

Co-authored-by: Codex <noreply@openai.com>

codex-rs/state/src/bin/logs_client.rs

@@ -46,7 +46,7 @@ struct Args {
     #[arg(long = "thread-id")]
     thread_id: Vec<String>,
 
-    /// Substring match against the log message.
+    /// Substring match against the rendered log body.
     #[arg(long)]
     search: Option<String>,
 
@@ -62,7 +62,7 @@ struct Args {
     #[arg(long, default_value_t = 500)]
     poll_ms: u64,
 
-    /// Show compact output with only time, level, and message.
+    /// Show compact output with only time, level, and rendered log body.
     #[arg(long)]
     compact: bool,
 }
@@ -295,7 +295,7 @@ fn heuristic_formatting(message: &str) -> String {
 
 mod matcher {
     pub(super) fn apply_patch(message: &str) -> bool {
-        message.starts_with("ToolCall: apply_patch")
+        message.contains("ToolCall: apply_patch")
     }
 }