chore: add vex code-search config

.vex.toml

@@ -0,0 +1,57 @@
+# vex configuration — https://github.com/tenatarika/vex
+#
+# Place this file in your project root as .vex.toml
+
+# Glob patterns to exclude from indexing (gitignore syntax, on top of .gitignore)
+# exclude = [
+#     "vendor/**",
+#     "node_modules/**",
+#     "*.generated.go",
+#     "dist/**",
+# ]
+
+# Default output format: "text", "json", or "compact"
+# format = "text"
+
+# Enable semantic embeddings by default (slower indexing, enables meaning-based search)
+semantic = true
+
+# Automatically run `vex update` before search if the index is stale
+auto_update = true
+
+# Embedder used for semantic indexing. Known IDs: minilm-l6-v2 (default).
+# Changing the embedder requires a full reindex.
+# embedder = "minilm-l6-v2"
+
+# Cache directory override. Defaults to the platform cache location.
+#   macOS:   ~/Library/Caches/vex
+#   Linux:   $XDG_CACHE_HOME/vex   (fallback: ~/.cache/vex)
+#   Windows: %LOCALAPPDATA%\vex    (fallback: %USERPROFILE%\AppData\Local\vex)
+# Accepts absolute paths, "~/..." or paths relative to this file (e.g. "./.vex/cache").
+# Can also be overridden per-invocation with --cache-dir or $VEX_CACHE_DIR.
+# cache_dir = "./.vex/cache"
+
+# Store the index inside the project as `<project>/.vex_cache/`. Useful when
+# the cache should travel with the project (e.g. on a moved or renamed
+# directory). vex writes a `.gitignore` inside it so contents are not
+# committed. Overridden by `cache_dir`, `--cache-dir`, or $VEX_CACHE_DIR.
+# local_cache = false
+
+# Thread count for parallel indexing (index/update/watch).
+#   * unset  — 80% of available cores, rounded up (default, leaves headroom)
+#   * 0      — use all cores (explicit opt-in to max throughput)
+#   * N      — exactly N workers
+# Overridable per-invocation with `-j/--jobs` or $VEX_JOBS.
+# jobs = 4
+
+# Build the persistent call-graph section. Disabling falls back to live-scan
+# for `vex callers`/`vex callees` (slower per-query, but saves indexing
+# time on large monorepos). The opt-out is persisted in the manifest so
+# `vex update` does not silently re-add the section.
+# Per-invocation override: `vex index --no-call-graph`.
+# call_graph = true
+
+# Build the BM25 channel. Disabling drops the third RRF channel and keeps
+# only structural (+ semantic). Same persistence rules as `call_graph`.
+# Per-invocation override: `vex index --no-bm25`.
+# bm25 = true