Forward external plugin trigger RPCs

[haos666]

Summary

Follow-up to #316 and the runtime companion change for #317.

• Forward external plugin trigger RPCs through RpcDriver: get_triggers, get_trigger_definition, create_trigger, and drop_trigger.
• Add RpcDriver unit tests covering method names, params, and result shapes.
• Keep built-in driver trigger behavior unchanged; this only fills the external plugin adapter methods that currently fall back to the default unsupported implementation.

Validation

• pnpm run typecheck
• pnpm run lint
• cargo test plugins::driver::tests -- --nocapture
• cargo test --lib
• Local DM plugin smoke: listed triggers, viewed definitions, created a trigger, and dropped a trigger through the Tabularis UI.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• src-tauri/src/plugins/driver.rs - Adds get_triggers, get_trigger_definition, create_trigger, and drop_trigger RPC forwarding methods for external plugins, plus unit tests covering all four methods.

---

_{Reviewed by kimi-k2.6-20260420 · 613,769 tokens}

[debba]

LGTM.
@NewtTheWolf if you want to do a check for new registry compliance.

[NewtTheWolf]

LGTM. @NewtTheWolf if you want to do a check for new registry compliance.

will do it tomorrow!

[debba]

@saurabh500 following #268, this could be interesting for SQL Server integration too.

[NewtTheWolf]

@debba — registry-compliance check done 👍

This is fine from the registry side: the new tabularium-extensions.schema.json (in #299) already defines the triggers capability (capabilities.triggers — "Enable trigger listing and management"), so a plugin exposing these forwarded trigger RPCs can declare support in a schema-compliant way. Nothing to change in #321 for compliance — it's good to go.

One cross-PR note: the only registry-side piece here is that schema, which lives in #299. So as long as it's just the schema change, #321 is fine — but the hosted registry needs to be brought in line with it before #299 is merged.