[sudo-tee]

Fixes #558

Problem

Since #489 widened symbol candidates to every available file and loaded buffer, assistant prose highlighted ordinary words (to, first, line, ...) as OpencodeSymbolReference, and gd/<CR> on them offered unrelated locals.

Fix

symbol_tokens.is_code_like gates both symbol target creation and highlighting in formatter.lua. A token qualifies when it:

• contains _, . or : (switch_to_mode, M.apply, A::b), or
• has camelCase (fooBar), or
• is wrapped directly in backticks (`first`).

Plain words in prose, and plain words inside fenced blocks or longer inline spans, no longer match.

Tests

• New unit tests for is_code_like and prose filtering in the formatter.
• Updated existing symbol tests and the symbol-reference-navigation.json fixture to backtick the bare collect token.
• make check passes.

[github-actions]

🏗️ Architecture check

Checks that require() calls between modules follow the layer rules in scripts/dependency-topology/topology.jsonc (entry → dispatch → services/UI → server/protocols; shared helpers usable everywhere).

Compared origin/main → HEAD.

	Before	After	Δ
Imports breaking layer rules	0	0	+0
Import loops	0	0	+0
Modules in largest loop	0	0	+0
Modules without a layer	0	0	+0

Imports between modules: +0 / -0

✅ No new problems

_{Run locally: make topology-check}