[codex-analytics] emit tool item events from item lifecycle

[rhan-oai]

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Stack created with Sapling. Best reviewed with ReviewStack.

• [codex-analytics] emit terminal tool review events #20483
• [codex-analytics] add tool review event schema #20482
• -> [codex-analytics] emit tool item events from item lifecycle #20481
• [codex-analytics] add tool item event schemas #20480
• [codex-analytics] replay protocol-native item timing #20239
• [codex-analytics] centralize thread analytics state #20460

[chatgpt-codex-connector]

💡 Codex Review

codex/codex-rs/app-server/src/bespoke_event_handling.rs

Line 202 in 008d071

if let Some(analytics_events_client) = analytics_events_client.as_ref() {

Remove stale analytics variable references

apply_bespoke_event_handling no longer takes analytics_events_client, but this match arm still reads analytics_events_client.as_ref(). That unresolved identifier causes a compile failure (same issue also appears in warning/guardian-warning arms), blocking build and release.

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[chatgpt-codex-connector]

Restrict start-time tracking to completable turn items

emit_turn_item_started stores every item ID in turn_item_started_at_ms, but some item types only emit a start event (e.g. ContextCompaction in core/src/compact.rs and core/src/compact_remote.rs) and never call emit_turn_item_completed. Those IDs are never removed, so long-lived sessions leak memory as compactions accumulate.

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[rhan-oai]

Closing duplicate stack created during resubmission; canonical PR remains #17090.