chore(release): bump to 0.21.0 and document the upgrade

0.21.0 rather than a patch: it adds --split-identifiers, changes what
every camelCase symbol is embedded from, and re-embeds existing indexes on
first open.

Moves every release pin together: Cargo.toml and the workspace members in
Cargo.lock, both ENGINE_VERSION pins (fetch-engine.js, shared with the VS
Code client, and the JetBrains resolver), the npm package, both version
fields in server.json, the VSIX version, pluginVersion, and the VSIX
install examples in both READMEs.

Left at 0.20.1 on purpose: lsp4ijVersion, which is the LSP4IJ dependency
and only coincidentally matches; the comments and README lines that name
0.20.1 as the last release without vector stamps; and the test fixtures
that publish and download their own fake release.

The README gains an "Upgrading to 0.21" section. The upgrade guidance
existed but sat inside the flags table, where nobody upgrading would look.
It also says something nothing else did: graphs persisted by 0.20.1 can
already hold files its watcher let in from excluded directories, and stale
symbols from workspaces reached through a symlink. The fixes stop new
damage but do not remove what is already stored, so those users need one
reindex.

The clients now ask for v0.21.0 release assets, which do not exist yet.
package-npm.sh refuses to package until they are published.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017rVbt7rENTwXkdHt3Bpgb5

Author: anvanster

Cargo.lock

@@ -60,7 +60,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.20.1"
+version = "0.21.0"
 edition = "2021"
 license = "Apache-2.0"
 repository = "https://github.com/codegraph-ai/codegraph"

Cargo.toml

@@ -30,7 +30,7 @@ The server indexes the current working directory automatically.
 Install the VSIX:
 
 ```bash
-code --install-extension codegraph-0.20.1.vsix
+code --install-extension codegraph-0.21.0.vsix
 ```
 
 One VSIX serves every platform.
@@ -85,6 +85,30 @@ one tool and exits without the MCP stdio handshake — ideal for scripting.
 
 ---
 
+## Upgrading to 0.21
+
+Each project re-embeds once, in the background, the first time 0.21 opens it.
+Stored vectors now record the model and settings that built them, and an index from 0.20.1 or earlier records none.
+Keyword search keeps working while it runs.
+
+Restart any `--watch` daemon after upgrading.
+A daemon left running keeps writing vectors that 0.21 will not load, and sessions attached to it run without semantic search until it restarts.
+
+Identifiers whose words run together, like `getUserById`, are now also embedded in word-split form.
+This mostly helps natural-language search in camelCase languages such as TypeScript, Java and C#.
+Pass `--split-identifiers=false` to keep the old behaviour.
+
+`--full-body-embedding=false` now takes effect; in 0.20.1 the flag was always on.
+
+Run a reindex once (`codegraph_reindex_workspace`) if either of these applied to you:
+
+- you excluded generated directories with `--exclude` or `.codegraphignore`, because 0.20.1's file watcher still let changes to them into the graph;
+- your workspace path goes through a symlink (on macOS that includes anything under `/tmp`), because 0.20.1 kept the old symbols of every edited or deleted file.
+
+Both are fixed, but symbols already persisted by 0.20.1 stay until the graph is rebuilt.
+
+---
+
 ## Configuration
 
 ### MCP Server flags

README.md

@@ -5,7 +5,7 @@
 # clients. The engine it fetches is pinned separately, in
 # CodeGraphServerResolver.ENGINE_VERSION, so a plugin-only patch cannot start
 # asking the release server for a tag that was never published.
-pluginVersion=0.20.1
+pluginVersion=0.21.0
 
 # Target platform. 243 = 2024.3, the oldest build LSP4IJ 0.20.x supports that
 # also has a stable Code Vision API. Bumping this is a compatibility decision,

jetbrains/gradle.properties

@@ -309,7 +309,7 @@ object CodeGraphServerResolver {
      * held equal to Cargo.toml by `scripts/publish-release-assets.sh`, which
      * refuses to publish while they disagree.
      */
-    const val ENGINE_VERSION = "0.20.1"
+    const val ENGINE_VERSION = "0.21.0"
 
     private val ARM64_ARCHES = setOf("aarch64", "arm64")
     private val X64_ARCHES = setOf("x86_64", "amd64", "x64")

jetbrains/src/main/kotlin/ai/codegraph/jetbrains/server/CodeGraphServerResolver.kt

@@ -75,7 +75,7 @@ const RELEASE_BASE = "https://github.com/codegraph-ai/CodeGraph/releases/downloa
  * Kept equal to the engine version by `scripts/publish-release-assets.sh`, which
  * refuses to publish while any channel's pin disagrees with Cargo.toml.
  */
-const ENGINE_VERSION = "0.20.1";
+const ENGINE_VERSION = "0.21.0";
 
 /** Codes Windows and POSIX use for "something else has this file open". */
 const IN_USE_ERROR_CODES = new Set(["EPERM", "EACCES", "EBUSY", "ETXTBSY"]);

mcp-package/bin/fetch-engine.js

@@ -1,6 +1,6 @@
 {
   "name": "@astudioplus/codegraph-mcp",
-  "version": "0.20.1",
+  "version": "0.21.0",
   "mcpName": "io.github.codegraph-ai/codegraph",
   "description": "CodeGraph MCP server \u2014 cross-language code intelligence with 42 tools, 38 languages",
   "author": "Andrey Vasilevsky <anvanster@gmail.com>",

mcp-package/package.json

@@ -6,12 +6,12 @@
     "url": "https://github.com/codegraph-ai/CodeGraph",
     "source": "github"
   },
-  "version": "0.20.1",
+  "version": "0.21.0",
   "packages": [
     {
       "registryType": "npm",
       "identifier": "@astudioplus/codegraph-mcp",
-      "version": "0.20.1",
+      "version": "0.21.0",
       "transport": {
         "type": "stdio"
       },

mcp-package/server.json

@@ -30,7 +30,7 @@ The server indexes the current working directory automatically.
 Install from the marketplace, or sideload the VSIX:
 
 ```bash
-code --install-extension codegraph-0.20.1.vsix
+code --install-extension codegraph-0.21.0.vsix
 ```
 
 One VSIX serves every platform.

vscode/README.md

@@ -2,7 +2,7 @@
     "name": "codegraph",
     "displayName": "CodeGraph",
     "description": "Cross-language code intelligence powered by graph analysis",
-    "version": "0.20.1",
+    "version": "0.21.0",
     "publisher": "aStudioPlus",
     "author": "Andrey Vasilevsky <anvanster@gmail.com>",
     "license": "Apache-2.0",