Logseq community plugin: WASM-powered semantic search

Summary

Logseq plugin providing deterministic semantic search via terraphim's Aho-Corasick automata compiled to WASM. Surfaces terraphim search as a Logseq slash command. Same WASM core as the Obsidian plugin (#606).

Why Logseq Specifically

Terraphim's KG parser already uses Logseq's native synonyms:: property syntax. Every Logseq user who writes synonyms:: in their pages is already creating terraphim-compatible knowledge graph entries without knowing it. This plugin activates that latent value.

Architecture

Same WASM core as #606:

Logseq Plugin (TypeScript)
    |
    v
@terraphim/autocomplete (WASM)
    |
    v
terraphim_automata (Rust -> WASM)
    |
    v
User's Logseq graph (pages/ directory)

Plugin Features

• Slash command /terraphim-search -- search with synonym expansion
• Block-level results: search result links to specific blocks, not just pages
• Page-level concept panel: shows synonyms and related concepts for the current page
• Settings: graph path, rebuild trigger, custom KG directory

Logseq Plugin API

• Logseq plugins are TypeScript/JavaScript
• Published via Logseq Marketplace (GitHub-based)
• API: logseq.Editor, logseq.UI, logseq.App for block operations

Messaging

"Your synonyms:: properties now power real Aho-Corasick search -- not just text matching, but concept-level semantic search compiled into a state machine."

Affected Crates / Packages

• Same WASM core as #606
• New repo or directory: terraphim-logseq-plugin

Estimated Effort

~1 day (shared WASM core with #606, Logseq-specific UI)

Dependencies

• #604 Obsidian format parser (shared parser code)
• #606 Obsidian plugin (shared WASM infrastructure)

Part of

Epic #603

Start by reading the shared WASM infrastructure in #606, the format parser work in #604, and the @terraphim/autocomplete interface. Use the Logseq Editor, UI, and App APIs as the entry points for the new plugin. Done means the plugin provides the slash-command search, block-level results, page concept panel, and listed settings.