⚡ Bolt: [performance improvement] eliminate zero-allocation block id references on scheduler tick

[ovasylenko]

💡 What: Changed the get_block_outputs_batch storage trait to accept a tuple with a &BlockId reference rather than an owned BlockId, allowing callers to simply push borrowed references from iteration loops without .clone()ing.

🎯 Why: In orch8-engine/src/scheduler.rs, the scheduler parses out SLA deadline checks for all incomplete block steps. Previously, checking deadlines allocated a brand new string for every distinct step_def.id.clone() just to query for an output in the database cache.

📊 Impact: Significantly reduces string allocations during the hot path process_instance loop ticks, particularly for high-concurrency loops on big sequences.

🔬 Measurement: Cargo workspace unit tests run via cargo test -p orch8-engine and cargo test -p orch8-storage should pass without performance regressions.

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PR created automatically by Jules for task 16431544039206705856 started by @ovasylenko

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[ovasylenko]

Closing as a duplicate of #53, which implemented the identical optimization (get_block_outputs_batch accepting &[(InstanceId, &BlockId)] to drop the per-tick BlockId clone). #53 was the only one of the four variants with fully-green CI (this one failed Check & Lint on an unrelated rustfmt diff in orch8-api/src/instances.rs), so it was merged. Thanks Bolt.

[google-labs-jules]

Closing as a duplicate of #53, which implemented the identical optimization (get_block_outputs_batch accepting &[(InstanceId, &BlockId)] to drop the per-tick BlockId clone). #53 was the only one of the four variants with fully-green CI (this one failed Check & Lint on an unrelated rustfmt diff in orch8-api/src/instances.rs), so it was merged. Thanks Bolt.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.