diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6351f4b..d627572 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -68,3 +68,12 @@ Use this file to track chronology, not release notes. Keep entries short, factua
 - Failed / learned: The install failure was caused by unauthenticated GitHub API rate limiting on the `edge` path, so renaming channels without removing the API dependency would not have fixed the root cause.
 - Blockers: `npm run build` still emits a pre-existing duplicate-content warning for `getting-started/installation`; the build succeeds.
 - Next: If desired, remove the now-unused `stable` alias too and clean up the duplicate docs-content warning separately.
+
+### 2026-03-27 11:58 PDT — release-0.2.15
+
+- Objective: Make the non-Anthropic subagent/auth fixes and contributor-guide updates releasable to tagged-install users instead of leaving them only on `main`.
+- Changed: Bumped the package version from `0.2.14` to `0.2.15` in `package.json` and `package-lock.json`; updated pinned installer examples in `README.md` and `website/src/content/docs/getting-started/installation.md`; aligned the local-development docs example to the npm-based root workflow; added `CONTRIBUTING.md` plus the bundled `skills/contributing/SKILL.md`.
+- Verified: Confirmed the publish workflow keys off `package.json` versus the currently published npm version; confirmed local `npm test`, `npm run typecheck`, and `npm run build` pass before the release bump.
+- Failed / learned: The open subagent issue is fixed on `main` but still user-visible on tagged installs until a fresh release is cut.
+- Blockers: Need the GitHub publish workflow to finish successfully before the issue can be honestly closed as released.
+- Next: Push `0.2.15`, monitor the publish workflow, then update and close the relevant GitHub issue/PR once the release is live.
diff --git a/README.md b/README.md
index 7e9a54c..dc37b8c 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ curl -fsSL https://feynman.is/install | bash
 irm https://feynman.is/install.ps1 | iex
 ```
 
-The one-line installer fetches the latest tagged release. To pin a version, pass it explicitly, for example `curl -fsSL https://feynman.is/install | bash -s -- 0.2.14`.
+The one-line installer fetches the latest tagged release. To pin a version, pass it explicitly, for example `curl -fsSL https://feynman.is/install | bash -s -- 0.2.15`.
 
 If you install via `pnpm` or `bun` instead of the standalone bundle, Feynman requires Node.js `20.19.0` or newer.
 
@@ -82,6 +82,9 @@ $ feynman audit 2401.12345
 
 $ feynman replicate "chain-of-thought improves math"
 → Replicates experiments on local or cloud GPUs
+
+$ feynman valichord "study-id-or-topic"
+→ Runs the ValiChord reproducibility workflow or checks existing Harmony Records
 ```
 
 ---
@@ -97,6 +100,7 @@ Ask naturally or use slash commands as shortcuts.
 | `/review <artifact>` | Simulated peer review with severity and revision plan |
 | `/audit <item>` | Paper vs. codebase mismatch audit |
 | `/replicate <paper>` | Replicate experiments on local or cloud GPUs |
+| `/valichord <study-or-topic>` | Reproducibility attestation workflow and Harmony Record lookup |
 | `/compare <topic>` | Source comparison matrix |
 | `/draft <topic>` | Paper-style draft from research findings |
 | `/autoresearch <idea>` | Autonomous experiment loop |
diff --git a/package-lock.json b/package-lock.json
index 82072f8..88ab809 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@companion-ai/feynman",
-  "version": "0.2.14",
+  "version": "0.2.15",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@companion-ai/feynman",
-      "version": "0.2.14",
+      "version": "0.2.15",
       "license": "MIT",
       "dependencies": {
         "@companion-ai/alpha-hub": "^0.1.2",
diff --git a/package.json b/package.json
index bfe66b7..00bf9ca 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@companion-ai/feynman",
-  "version": "0.2.14",
+  "version": "0.2.15",
   "description": "Research-first CLI agent built on Pi and alphaXiv",
   "license": "MIT",
   "type": "module",
diff --git a/website/src/content/docs/getting-started/installation.md b/website/src/content/docs/getting-started/installation.md
index 2c1e0a6..a12d76e 100644
--- a/website/src/content/docs/getting-started/installation.md
+++ b/website/src/content/docs/getting-started/installation.md
@@ -62,13 +62,13 @@ These installers download only the `skills/` tree from the Feynman repository. T
 The one-line installer already targets the latest tagged release. To pin an exact version, pass it explicitly:
 
 ```bash
-curl -fsSL https://feynman.is/install | bash -s -- 0.2.14
+curl -fsSL https://feynman.is/install | bash -s -- 0.2.15
 ```
 
 On Windows:
 
 ```powershell
-& ([scriptblock]::Create((irm https://feynman.is/install.ps1))) -Version 0.2.14
+& ([scriptblock]::Create((irm https://feynman.is/install.ps1))) -Version 0.2.15
 ```
 
 ## pnpm
@@ -129,6 +129,6 @@ For contributing or running Feynman from source:
 git clone https://github.com/getcompanion-ai/feynman.git
 cd feynman
 nvm use || nvm install
-pnpm install
-pnpm start
+npm install
+npm start
 ```