Add dynamic concurrency limits - #794

Draft

p-larson wants to merge 10 commits into

p-larson:peter/solid-queue-dynamic-concurrency

Commits on Aug 26, 2026

Add limit and generation columns on semaphores.
p-larson
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2b24eb7
Evaluate proc to: on wait and refresh existing semaphores.
p-larson
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ab0af66
Test admit, block, memoize, and refresh for dynamic limits.
p-larson
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2258231
Document proc to: and Concurrency.refresh.
p-larson
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823a65a
Ship an upgrade migration for semaphore limit and generation.
p-larson
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571ae6d
Document proc to: and refresh cost on the concurrency path.
p-larson
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69b1084
Spell out that the to: proc is the cost and TTL is the lever.
p-larson
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16cfc01
Document fleet sizing from stored semaphore limit and ready age.
p-larson
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1046bc2
Clarify that the to: memo is one MemoryStore per process.
p-larson
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1bd4b81
Spell out proc to: cost as per key, per TTL, per process.
p-larson
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985e844