v0.4.16

What's Changed

• Bump versions for 0.4.16 release (#646)
• fix(plugin): reduce SessionStart configuration overhead (#645)
• feat: add configurable index exclusions (#644)
• docs: explain the indexing cost model (cold vs incremental vs model swap) (#610)
• feat: support ONNX models that require token_type_ids (#607)
• fix(opencode): keep plugin entry exports loader-safe (#643)
• docs: correct summarization config scope (#642)
• fix: lowercase booleans in config get output so hook gates match (#634)