fix(#1970): nested-path environment.etc."gitconfig" + mkIf — whole-set binding collided with sibling entries

CLAUDE.md

@@ -113,6 +113,8 @@ read them à la carte.
 - **"How does the matrix-tuwunel container work? What about
   fluffychat-web and per-agent matrix accounts?"** →
   [`docs/matrix.md`](docs/matrix.md).
+- **"How do I give an agent a GitHub account (`gh` + `git push`)?
+  How is the PAT injected?"** → [`docs/github.md`](docs/github.md).
 - **"How does DNS resolution work in agent containers? What's the
   bridge network for?"** → [`docs/network.md`](docs/network.md).
 - **"How do I connect two hives into a swarm? How do I declare peer

README.md

@@ -118,6 +118,18 @@ The hive-internal account is always named `main` (synthesized from `hyperhive.ma
 
 For more details see [`docs/matrix.md`](docs/matrix.md).
 
+### GitHub account
+
+Every agent gets a managed GitHub identity — a `gh` CLI wrapper and `git push` over HTTPS — on by default (`hyperhive.github.enable`), inert until a PAT is provisioned. There is nothing per-agent to declare: paste an operator-supplied personal access token into the agent's dashboard **credentials** tab (or `hivectl github set-token <agent> --token-stdin`) and it works. The `gh` wrapper + git credential helper read the token live (git auths as `x-access-token` + the PAT; github.com only), so a rotated PAT takes effect with no rebuild.
+
+Turn the integration off for the whole hive with the host option:
+
+```nix
+services.hyperhive.github.enable = false;
+```
+
+The PAT value is never in nix — only the enable flag. For more details see [`docs/github.md`](docs/github.md).
+
 ## Operator CLI
 
 `hivectl` is the operator-facing host CLI for ad-hoc administration that

docs/github.md

@@ -0,0 +1,79 @@
+# GitHub accounts
+
+Give an agent a managed GitHub identity — a `gh` CLI and `git push` over
+HTTPS, both authenticated by an operator-supplied personal access token
+(PAT) — so it can run GitHub API calls and push commits without any manual
+`gh auth login`.
+
+Provisioning is UI-driven, mirroring the dashboard side of the
+[matrix account](matrix.md) flow: paste a PAT into the agent's credentials
+tab and it works. No per-agent nix declaration, no rebuild — the token is
+injected into the agent's state dir out of band.
+
+## Enabling
+
+The integration is **on by default** for every agent (`hyperhive.github.enable
+= true`), inert until a PAT is provisioned. There is nothing per-agent to
+declare — an agent gains GitHub simply by having a PAT written to its token
+file.
+
+To turn it off for the whole hive, set the host option:
+
+```nix
+services.hyperhive.github.enable = false;
+```
+
+hive-c0re's meta-flake renderer then injects `hyperhive.github.enable = false`
+into every agent, so no agent ships the `gh` wrapper or credential helper.
+(`hyperhive.github.enable` also exists per-agent for completeness, but the
+hive-wide host switch is the intended control.)
+
+github.com only. The token **value** never touches nix — it is written to
+`<state>/github-token` separately (see [Provisioning](#provisioning)).
+
+## How the agent uses it
+
+When enabled, the container gets:
+
+- **A `gh` wrapper** on `PATH` (shadowing the raw `gh`) that exports
+  `GH_TOKEN` from the token file at invocation, then execs real `gh`. So
+  `gh pr create`, `gh api …`, etc. just work — `gh` derives the identity
+  from the token.
+- **A git credential helper** (`git-credential-hive-github`), wired via a
+  host-scoped `/etc/gitconfig` entry for `https://github.com`, so
+  `git push https://github.com/<owner>/<repo>` authenticates as
+  `x-access-token` + the PAT (GitHub ignores the username for PAT auth).
+  Host-scoped, so it never touches the forge (`localhost:3000`) or any
+  other remote.
+- **Env**: `HIVE_GITHUB_TOKEN_FILE` (the token path — never the secret).
+
+Both the wrapper and the credential helper read the token from the file
+**at invocation time**, so a PAT written (or rotated) mid-session takes
+effect immediately — no container rebuild or restart. Until the file
+exists, `gh` / `git push` simply fail unauthenticated.
+
+## Provisioning
+
+The PAT is operator-supplied. The primary path is the **dashboard
+credentials tab** (github sub-tab): paste the PAT for an agent and submit
+(`POST /api/github-account`). There is also a CLI path for
+recovery/scripting:
+
+```sh
+hivectl github set-token <agent> --token-stdin   # paste the PAT on stdin (preferred)
+hivectl github set-token <agent> --token <pat>    # inline (visible in shell history)
+```
+
+Either path has hive-c0re delegate the write to hive-priv, which stores the
+file `0600` owned by the agent (so the container can read it) — the same
+credential-injection path as forge/matrix tokens. See
+[hivectl → GitHub](tools/hivectl.md#github).
+
+## Security
+
+- Use a **dedicated bot account**, never a human's.
+- Mint a **minimally-scoped PAT** — only the repos/scopes the agent's
+  workflow needs. Agents have passwordless sudo, so a compromised or
+  hallucinating agent can act as the account within the token's scopes;
+  scope is the real blast-radius limiter, and the container boundary is
+  the enforcement. See [security.md](security.md).

docs/tools/hivectl-cli.md

@@ -13,6 +13,8 @@ This document contains the help content for the `hivectl` command-line program.
 * [`hivectl matrix promote-user`↴](#hivectl-matrix-promote-user)
 * [`hivectl matrix reset-password`↴](#hivectl-matrix-reset-password)
 * [`hivectl matrix invite`↴](#hivectl-matrix-invite)
+* [`hivectl github`↴](#hivectl-github)
+* [`hivectl github set-token`↴](#hivectl-github-set-token)
 * [`hivectl gateway`↴](#hivectl-gateway)
 * [`hivectl gateway create-user`↴](#hivectl-gateway-create-user)
 * [`hivectl gateway delete-user`↴](#hivectl-gateway-delete-user)
@@ -49,6 +51,7 @@ Sibling to the `hive-c0re` daemon binary. Covers host-side admin operations that
 
 * `forge` — Forgejo user provisioning. Manual entry point to the same idempotent flow c0re runs automatically at boot (`forge::ensure_all`) — useful for recovery, ad-hoc reprovisioning, or single-agent fixes without bouncing the daemon
 * `matrix` — matrix-tuwunel user provisioning. Manual entry point to the same idempotent flow c0re runs automatically at boot (`matrix::ensure_all`) — useful when the boot-time sweep skipped an agent (e.g. matrix container wasn't up yet) or to re-register after wiping a token file
+* `github` — GitHub account provisioning: write an operator-supplied personal access token (PAT) into an agent's `github-token` state file so its `gh` wrapper + git credential helper can authenticate. Unlike forge/matrix there is no account creation — the operator supplies a PAT for an existing GitHub account. A CLI alternative to the dashboard credentials tab; the integration is on by default (`hyperhive.github.enable`), so no per-agent config is needed
 * `gateway` — Gateway htpasswd user management. Add, remove, or list users in an htpasswd file used by the gateway's HTTP Basic auth (`services.hyperhive.gateway.auth`). Credentials are stored as `BCrypt` hashes — no extra service or PAM required
 * `agents` — Agent container management. Requires the hive-c0re daemon to be running (connects to the host admin socket)
 * `wg` — WireGuard inter-hive mesh setup helpers (`services.hyperhive.swarm`)
@@ -194,6 +197,35 @@ Invite a matrix user to the hive Space (default) or a specific room. Uses the hi
 
 
 
+## `hivectl github`
+
+GitHub account provisioning: write an operator-supplied personal access token (PAT) into an agent's `github-token` state file so its `gh` wrapper + git credential helper can authenticate. Unlike forge/matrix there is no account creation — the operator supplies a PAT for an existing GitHub account. A CLI alternative to the dashboard credentials tab; the integration is on by default (`hyperhive.github.enable`), so no per-agent config is needed
+
+**Usage:** `hivectl github <COMMAND>`
+
+###### **Subcommands:**
+
+* `set-token` — Write a GitHub PAT into `<agent>`'s state dir (`github-token`, 0600, agent-owned) via hive-priv. The GitHub integration is on by default (`hyperhive.github.enable`), so the `gh` wrapper + git credential helper pick the token up with no per-agent config. The token is read live at invocation, so no rebuild/restart is needed. Prefer `--token-stdin`: an inline `--token` is visible in shell history + process listings
+
+
+
+## `hivectl github set-token`
+
+Write a GitHub PAT into `<agent>`'s state dir (`github-token`, 0600, agent-owned) via hive-priv. The GitHub integration is on by default (`hyperhive.github.enable`), so the `gh` wrapper + git credential helper pick the token up with no per-agent config. The token is read live at invocation, so no rebuild/restart is needed. Prefer `--token-stdin`: an inline `--token` is visible in shell history + process listings
+
+**Usage:** `hivectl github set-token [OPTIONS] <AGENT>`
+
+###### **Arguments:**
+
+* `<AGENT>` — Logical agent name (the container/agent name)
+
+###### **Options:**
+
+* `--token <TOKEN>` — The PAT value inline. Mutually exclusive with `--token-stdin`
+* `--token-stdin` — Read the PAT from stdin (trailing newline stripped). Mutually exclusive with `--token`
+
+
+
 ## `hivectl gateway`
 
 Gateway htpasswd user management. Add, remove, or list users in an htpasswd file used by the gateway's HTTP Basic auth (`services.hyperhive.gateway.auth`). Credentials are stored as `BCrypt` hashes — no extra service or PAM required

docs/tools/hivectl.md

@@ -75,6 +75,26 @@ hivectl matrix invite @mara:server --room '#hive-chat:server'  # ...or to a spec
   invite power (it owns the hive Space, so that case always works).
   Idempotent — already-member / already-invited is a no-op.
 
+## GitHub
+
+Write an operator-supplied GitHub personal access token (PAT) into an
+agent's token file so its `gh` wrapper + git credential helper can act as
+the bot account. Unlike forge/matrix there is no account creation — the PAT
+is for an existing GitHub account. A CLI alternative to the dashboard
+credentials tab; the [GitHub integration](../github.md) is on by default
+(`hyperhive.github.enable`), so no per-agent config is needed.
+
+```bash
+hivectl github set-token damocles --token-stdin   # paste the PAT on stdin (preferred)
+hivectl github set-token damocles --token <pat>    # inline (visible in shell history)
+```
+
+- `set-token`: writes `<state>/github-token` (`0600`, agent-owned) via
+  hive-priv — the same credential-injection path as forge/matrix tokens.
+  The `gh` wrapper / git credential helper read it live, so a freshly-set
+  or rotated PAT takes effect with no rebuild or restart. Refuses an empty
+  token. See [github.md](../github.md) for the full flow + security notes.
+
 ## Gateway
 
 Manage users in the gateway's HTTP Basic auth htpasswd file

hive-c0re/src/bin/hivectl.rs

@@ -70,6 +70,17 @@ enum Cmd {
         #[command(subcommand)]
         cmd: MatrixCmd,
     },
+    /// GitHub account provisioning: write an operator-supplied personal
+    /// access token (PAT) into an agent's `github-token` state file so its
+    /// `gh` wrapper + git credential helper can authenticate. Unlike
+    /// forge/matrix there is no account creation — the operator supplies a
+    /// PAT for an existing GitHub account. A CLI alternative to the dashboard
+    /// credentials tab; the integration is on by default
+    /// (`hyperhive.github.enable`), so no per-agent config is needed.
+    Github {
+        #[command(subcommand)]
+        cmd: GithubCmd,
+    },
     /// Gateway htpasswd user management. Add, remove, or list users in
     /// an htpasswd file used by the gateway's HTTP Basic auth
     /// (`services.hyperhive.gateway.auth`). Credentials are stored as
@@ -421,6 +432,28 @@ enum MatrixCmd {
     },
 }
 
+#[derive(Subcommand)]
+enum GithubCmd {
+    /// Write a GitHub PAT into `<agent>`'s state dir (`github-token`, 0600,
+    /// agent-owned) via hive-priv. The GitHub integration is on by default
+    /// (`hyperhive.github.enable`), so the `gh` wrapper + git credential
+    /// helper pick the token up with no per-agent config. The token is read
+    /// live at invocation, so no rebuild/restart is needed. Prefer
+    /// `--token-stdin`: an inline `--token` is visible in shell history +
+    /// process listings.
+    SetToken {
+        /// Logical agent name (the container/agent name).
+        agent: String,
+        /// The PAT value inline. Mutually exclusive with `--token-stdin`.
+        #[arg(long)]
+        token: Option<String>,
+        /// Read the PAT from stdin (trailing newline stripped). Mutually
+        /// exclusive with `--token`.
+        #[arg(long, conflicts_with = "token")]
+        token_stdin: bool,
+    },
+}
+
 // Default htpasswd file path — the host-side location of the gateway's
 // credential store, pre-created by a tmpfiles rule when
 // `services.hyperhive.gateway.auth.enable = true`. Literal lives in
@@ -618,6 +651,13 @@ async fn main() -> Result<()> {
             MatrixCmd::ResetPassword { name } => matrix_reset_password(&name).await,
             MatrixCmd::Invite { user, room } => matrix_invite(&user, room.as_deref()).await,
         },
+        Cmd::Github { cmd } => match cmd {
+            GithubCmd::SetToken {
+                agent,
+                token,
+                token_stdin,
+            } => github_set_token(&agent, token, token_stdin).await,
+        },
         Cmd::Gateway { cmd } => match cmd {
             GatewayCmd::CreateUser {
                 file,
@@ -1124,6 +1164,34 @@ fn choom(name: &str, resume_session: Option<&str>) -> Result<()> {
     Err(anyhow::anyhow!("exec machinectl: {err}"))
 }
 
+/// `hivectl github set-token <agent>`: write an operator-supplied GitHub PAT
+/// into the agent's `github-token` state file (0600, agent-owned) via
+/// hive-priv, so the agent's `gh` wrapper + git credential helper can
+/// authenticate. Read live at invocation, so no rebuild/restart is needed.
+async fn github_set_token(agent: &str, token: Option<String>, token_stdin: bool) -> Result<()> {
+    let token = match (token, token_stdin) {
+        (Some(t), _) => t,
+        (None, true) => {
+            let mut s = String::new();
+            std::io::Read::read_to_string(&mut std::io::stdin(), &mut s)?;
+            s.trim_end_matches(['\n', '\r']).to_owned()
+        }
+        (None, false) => bail!(
+            "provide the PAT via --token <pat> or --token-stdin (stdin preferred — \
+             an inline token is visible in shell history + process listings)"
+        ),
+    };
+    if token.is_empty() {
+        bail!("refusing to write an empty GitHub token for agent '{agent}'");
+    }
+    hive_c0re::priv_client::write_agent_github_token(agent, &token).await?;
+    println!(
+        "wrote github-token for agent '{agent}' \
+         (read live by the gh wrapper / git credential helper — no rebuild needed)"
+    );
+    Ok(())
+}
+
 async fn forge_create_user(name: &str, password: Option<&str>, password_stdin: bool) -> Result<()> {
     if !hive_c0re::forge::is_present().await {
         bail!(

hive-c0re/src/dashboard/matrix_accounts.rs

@@ -262,6 +262,73 @@ pub(super) async fn post_matrix_account_login(Form(f): Form<MatrixLoginForm>) ->
     axum::Json(MatrixLoginResult { ok: true, user_id }).into_response()
 }
 
+/// Form body for `POST /api/github-account` (urlencoded, the dashboard's
+/// mutation convention). Writes the operator-supplied PAT to the agent's
+/// `github-token` file. The GitHub counterpart of the matrix login form, but
+/// far simpler: no account creation, no homeserver, no login modes — the
+/// operator pastes a PAT for an existing account.
+#[derive(Deserialize)]
+pub(super) struct GithubAccountForm {
+    agent: String,
+    token: String,
+}
+
+#[derive(Serialize)]
+struct GithubAccountResult {
+    ok: bool,
+}
+
+/// Provision (or refresh) an agent's GitHub PAT from the dashboard
+/// credentials tab. Validates the agent name, then writes the PAT to
+/// `<state>/github-token` (`0600`, agent-owned) via hive-priv. No account
+/// creation and no daemon to kick — the agent's `gh` wrapper / git credential
+/// helper read the file live, so the new token takes effect immediately.
+/// Operator-authenticated (dashboard). Never echoes the token back — only
+/// `{ ok: true }`.
+pub(super) async fn post_github_account(Form(f): Form<GithubAccountForm>) -> Response {
+    let agent = f.agent.trim();
+    let token = f.token.trim();
+    if !is_plain_ident(agent) {
+        return error_response(&format!("github-account: invalid agent {agent:?}"));
+    }
+    if token.is_empty() {
+        return error_response("github-account: token is required");
+    }
+    if let Err(e) = crate::priv_client::write_agent_github_token(agent, token).await {
+        return error_response(&format!("github-account: write token failed: {e:#}"));
+    }
+    tracing::info!(%agent, "github-account: provisioned github PAT");
+    axum::Json(GithubAccountResult { ok: true }).into_response()
+}
+
+#[derive(Deserialize)]
+pub(super) struct GithubAccountQuery {
+    agent: String,
+}
+
+#[derive(Serialize)]
+struct GithubAccountStatus {
+    /// A `github-token` file exists in the agent's state dir (a PAT has been
+    /// provisioned). A static PAT has no live/heartbeat concept, so this is
+    /// the only status the credentials tab needs.
+    present: bool,
+}
+
+/// `GET /api/github-account?agent=<name>` — whether the agent has a GitHub
+/// PAT provisioned (its `github-token` file exists). Lets the credentials tab
+/// show "token stored" vs "not set" instead of a black-hole paste field.
+/// Never returns the token itself.
+pub(super) async fn get_github_account(Query(q): Query<GithubAccountQuery>) -> Response {
+    let agent = q.agent.trim();
+    if !is_plain_ident(agent) {
+        return error_response(&format!("github-account: invalid agent {agent:?}"));
+    }
+    let present = Coordinator::agent_notes_dir(agent)
+        .join("github-token")
+        .exists();
+    axum::Json(GithubAccountStatus { present }).into_response()
+}
+
 /// POST `m.login.password` to `<homeserver>/_matrix/client/v3/login`.
 /// Returns `(access_token, user_id)`.
 async fn matrix_password_login(

hive-c0re/src/dashboard/mod.rs

@@ -188,6 +188,10 @@ pub async fn serve(port: u16, coord: Arc<Coordinator>) -> Result<()> {
             "/api/matrix-account-login",
             post(matrix_accounts::post_matrix_account_login),
         )
+        .route(
+            "/api/github-account",
+            post(matrix_accounts::post_github_account).get(matrix_accounts::get_github_account),
+        )
         .route(
             "/api/cancel-reminder/{id}",
             post(reminders::post_cancel_reminder),

hive-c0re/src/meta.rs

@@ -1041,6 +1041,14 @@ where
             out.push_str("              hyperhive.otel.debug = true;\n");
         }
     }
+    // GitHub integration is on by default in every agent
+    // (`hyperhive.github.enable`); the host turns it off hive-wide via
+    // `services.hyperhive.github.enable = false`, surfaced here as the
+    // `HYPERHIVE_GITHUB_DISABLED` env on hive-c0re's unit. Only the OFF
+    // override is propagated — the enabled default needs no per-agent line.
+    if std::env::var_os("HYPERHIVE_GITHUB_DISABLED").is_some() {
+        out.push_str("              hyperhive.github.enable = false;\n");
+    }
     out.push_str(
         r#"              # The harness service inside the container runs as a
               # non-root unix user named after the agent (`damocles`,
@@ -1745,4 +1753,44 @@ mod tests {
             "no otel lines when disabled:\n{off}"
         );
     }
+
+    #[test]
+    fn render_flake_injects_github_disable_only_when_signalled() {
+        // services.hyperhive.github.enable = false -> HYPERHIVE_GITHUB_DISABLED
+        // on hive-c0re's unit -> `hyperhive.github.enable = false` injected into
+        // every agent. On by default, so nothing is emitted unless disabled.
+        //
+        // SAFETY: single-threaded mutation of an env var no other test asserts
+        // on; restored before returning.
+        let render = || {
+            render_flake(
+                "github:example/hyperhive",
+                "path:/nix/store/bbbb-hyperhive-docs-source",
+                "path:/nix/store/aaaa-nixpkgs-source",
+                8000,
+                "she/her",
+                &std::collections::HashMap::new(),
+                &[sample_spec("alice", false, 9001)],
+            )
+        };
+        unsafe {
+            std::env::remove_var("HYPERHIVE_GITHUB_DISABLED");
+        }
+        let on_default = render();
+        unsafe {
+            std::env::set_var("HYPERHIVE_GITHUB_DISABLED", "1");
+        }
+        let disabled = render();
+        unsafe {
+            std::env::remove_var("HYPERHIVE_GITHUB_DISABLED");
+        }
+        assert!(
+            !on_default.contains("hyperhive.github.enable"),
+            "github.enable must not be emitted by default (agents keep the true default):\n{on_default}"
+        );
+        assert!(
+            disabled.contains("hyperhive.github.enable = false;"),
+            "github.enable = false must be injected when the host disables it:\n{disabled}"
+        );
+    }
 }

hive-c0re/src/priv_client.rs

@@ -281,6 +281,25 @@ pub async fn write_agent_matrix_token(
     .await?)
 }
 
+/// Write a GitHub personal access token (PAT) for `agent_name` via hive-priv
+/// (running as root). Writes `<state>/github-token` 0600, chowned to the agent
+/// user so the `gh` wrapper / git credential helper can read it from inside the
+/// container. Single account per agent — no account suffix. The token value is
+/// operator-supplied (for the agent's GitHub integration, `hyperhive.github.enable`).
+///
+/// # Errors
+///
+/// Returns an error if the hive-priv call fails — the socket is unreachable,
+/// `agent_name` is rejected by the root-side validation, or the file
+/// write/chown fails.
+pub async fn write_agent_github_token(agent_name: &str, token: &str) -> Result<()> {
+    ok(call(&PrivRequest::WriteAgentGithubToken {
+        agent_name: agent_name.to_owned(),
+        token: token.to_owned(),
+    })
+    .await?)
+}
+
 /// Restart `hive-matrix-daemon.service` inside an agent container via
 /// `systemctl --machine=h-<agent_name> restart hive-matrix-daemon.service`.
 /// Non-fatal: callers should handle errors gracefully — if the container is

hive-priv/src/main.rs

@@ -289,6 +289,14 @@ async fn exec(req: PrivRequest, writer: &mut OwnedWriteHalf) -> Result<(String,
             Ok(res)
         }
 
+        PrivRequest::WriteAgentGithubToken {
+            ref agent_name,
+            ref token,
+        } => {
+            validate_agent_name(agent_name)?;
+            write_agent_state_file(agent_name, "github-token", &format!("{token}\n"))
+        }
+
         PrivRequest::RestartMatrixDaemon { ref agent_name } => {
             restart_matrix_daemon(agent_name).await
         }

hive-sh4re/src/priv_proto.rs

@@ -411,6 +411,22 @@ pub enum PrivRequest {
         homeserver: Option<String>,
     },
 
+    /// Write `github-token` into `AGENT_STATE_ROOT/<agent_name>/state/github-token`.
+    ///
+    /// The operator-supplied GitHub personal access token (PAT) for the
+    /// agent's GitHub integration (`hyperhive.github.enable`). Same write
+    /// semantics as
+    /// `WriteAgentForgeToken` — validates `agent_name`, creates the state dir
+    /// if absent, writes the file 0600, and chowns it to the agent so the
+    /// `gh` wrapper / git credential helper can read it. No account suffix
+    /// (single GitHub account per agent).
+    WriteAgentGithubToken {
+        /// Logical agent name (validated by `validate_agent_name`).
+        agent_name: String,
+        /// PAT value. hive-priv appends a trailing newline before writing.
+        token: String,
+    },
+
     /// Restart `hive-matrix-daemon.service` inside an agent container via
     /// `systemctl --machine=h-<agent_name> restart hive-matrix-daemon.service`.
     /// Used by hive-c0re to kick the daemon after a successful token write

nix/modules/hive-c0re.nix

@@ -215,6 +215,22 @@ in
     '';
   };
 
+  options.services.hyperhive.github.enable = lib.mkOption {
+    type = lib.types.bool;
+    default = true;
+    example = false;
+    description = ''
+      Hive-wide switch for the per-agent GitHub integration (the `gh` CLI
+      wrapper + git credential helper, per `hyperhive.github.enable`). On by
+      default: every agent gets the integration, inert until a PAT is
+      provisioned via the dashboard credentials tab or `hivectl github
+      set-token`. Set `false` to turn it off for the whole hive --- the
+      meta-flake renderer (`hive-c0re/src/meta.rs`) then injects
+      `hyperhive.github.enable = false` into every agent. Exposed to hive-c0re
+      as `HYPERHIVE_GITHUB_DISABLED` (set only when the integration is off).
+    '';
+  };
+
   # Hive-wide OTEL stats export. Set ONCE here at host level; the
   # meta-flake renderer (`hive-c0re/src/meta.rs::otel_config`) reads the
   # HYPERHIVE_OTEL_* env exported below off hive-c0re's unit and injects
@@ -956,6 +972,12 @@ in
       // lib.optionalAttrs (config.services.hyperhive.swarmName != null) {
         HYPERHIVE_SWARM_NAME = config.services.hyperhive.swarmName;
       }
+      // lib.optionalAttrs (!config.services.hyperhive.github.enable) {
+        # GitHub integration is on by default; only signal the OFF override to
+        # meta.rs, which then injects `hyperhive.github.enable = false` into
+        # every agent. See services.hyperhive.github.enable.
+        HYPERHIVE_GITHUB_DISABLED = "1";
+      }
       // lib.optionalAttrs config.services.hyperhive.otel.enable (
         # Hive-wide OTEL config -> read by meta.rs::otel_config and
         # injected as build-time `hyperhive.otel.*` into every agent.

nix/templates/harness-base.nix

@@ -17,6 +17,29 @@ let
   # from `userName` to keep them coupled.
   userName = config.hyperhive.user.name;
   homeDir = "/home/${userName}";
+  # GitHub integration (hyperhive.github.enable): a `gh` wrapper + a git
+  # credential helper, both sourcing the PAT from HIVE_GITHUB_TOKEN_FILE at
+  # invocation time so a dashboard-pasted token takes effect with no rebuild.
+  # The scripts are static (they read env at runtime) — the enable flag only
+  # gates whether they're installed + the env is set, so the token value never
+  # enters the nix store. github.com only; git auths as `x-access-token` + PAT.
+  ghWrapper = pkgs.writeShellScriptBin "gh" ''
+    if [ -n "''${HIVE_GITHUB_TOKEN_FILE:-}" ] && [ -r "''${HIVE_GITHUB_TOKEN_FILE}" ]; then
+      GH_TOKEN="$(cat "''${HIVE_GITHUB_TOKEN_FILE}")"
+      export GH_TOKEN
+    fi
+    exec ${pkgs.gh}/bin/gh "$@"
+  '';
+  gitCredHelper = pkgs.writeShellScriptBin "git-credential-hive-github" ''
+    # git credential-helper protocol: only the `get` action needs an answer.
+    [ "''${1:-}" = "get" ] || exit 0
+    if [ -n "''${HIVE_GITHUB_TOKEN_FILE:-}" ] && [ -r "''${HIVE_GITHUB_TOKEN_FILE}" ]; then
+      # GitHub ignores the username for PAT auth — `x-access-token` is the
+      # conventional placeholder; the PAT is the password.
+      printf 'username=x-access-token\n'
+      printf 'password=%s\n' "$(cat "''${HIVE_GITHUB_TOKEN_FILE}")"
+    fi
+  '';
   # Hive-wide OpenTelemetry config (host-driven; baked in per-agent by
   # meta.rs `otel_config`).
   otelCfg = config.hyperhive.otel;
@@ -624,6 +647,31 @@ in
     '';
   };
 
+  options.hyperhive.github.enable = lib.mkOption {
+    type = lib.types.bool;
+    default = true;
+    description = ''
+      Install the GitHub integration in this agent: a `gh` CLI wrapper and a
+      git credential helper for `https://github.com`, both authenticated from
+      an operator-supplied personal access token (PAT). The PAT is written to
+      `<state>/github-token` out of band --- the dashboard credentials tab or
+      `hivectl github set-token` --- so giving an agent GitHub is a runtime
+      paste, no per-agent config or rebuild. The wrappers read the token file
+      at invocation, so a freshly-pasted PAT takes effect immediately; until
+      one exists, `gh` / `git push` just fail unauthenticated.
+
+      github.com only. git authenticates as `x-access-token` + the PAT (GitHub
+      ignores the username for PAT auth); `gh` derives its identity from the
+      token. Keep the PAT minimally scoped: the agent has passwordless sudo, so
+      a compromised agent can act within the token's scopes --- scope is the
+      real blast-radius limiter.
+
+      On by default. Host-driven: set `services.hyperhive.github.enable = false`
+      to turn the integration off hive-wide (meta.rs propagates the override
+      into every agent).
+    '';
+  };
+
   options.hyperhive.frontend.dist = lib.mkOption {
     type = lib.types.package;
     default = pkgs.hyperhive-frontend;
@@ -1488,6 +1536,12 @@ in
       # regardless of which profile files are sourced.
       NIX_REMOTE = "daemon";
     }
+    // lib.optionalAttrs config.hyperhive.github.enable {
+      # GitHub integration: point the gh wrapper + git credential helper at the
+      # agent's PAT file (written by the credentials tab / `hivectl github
+      # set-token`). Only the path — never the secret (see hyperhive.github.enable).
+      HIVE_GITHUB_TOKEN_FILE = "/agents/${userName}/state/github-token";
+    }
     // lib.optionalAttrs (!config.hyperhive.autoCompact) {
       # Zero watermark disables proactive compaction; the reactive path
       # (compact-on-overflow) still fires when the session is truly full.
@@ -1582,27 +1636,53 @@ in
     # we have to allow it inside the container's config as well.
     nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (pkgs.lib.getName pkg) [ "claude-code" ];
 
-    environment.systemPackages = with pkgs; [
-      hyperhive
-      claude-code
-      bashInteractive
-      coreutils-full
-      # procps for pkill — used by the web UI's /api/cancel to SIGINT the
-      # in-flight claude turn.
-      procps
-      # tea: gitea/forgejo CLI client. Configured at boot by the
-      # tea-login oneshot below if /state/forge-token is present, so
-      # claude can `tea repos create`, `tea pulls create`, etc.
-      tea
-      # jq: JSON processing in shell — useful for parsing API responses,
-      # forge REST calls, sqlite output, etc.
-      jq
-      # curl: HTTP client for forge REST API and other web requests.
-      curl
-      # hive-forge <verb>: CLI wrapping common Forgejo REST API operations
-      # (view, pr, issue, comment, assign, close, labels, branches, etc.)
-      (pkgs.callPackage ../packages/hive-forge-tools.nix { })
-    ];
+    environment.systemPackages =
+      with pkgs;
+      [
+        hyperhive
+        claude-code
+        bashInteractive
+        coreutils-full
+        # procps for pkill — used by the web UI's /api/cancel to SIGINT the
+        # in-flight claude turn.
+        procps
+        # tea: gitea/forgejo CLI client. Configured at boot by the
+        # tea-login oneshot below if /state/forge-token is present, so
+        # claude can `tea repos create`, `tea pulls create`, etc.
+        tea
+        # jq: JSON processing in shell — useful for parsing API responses,
+        # forge REST calls, sqlite output, etc.
+        jq
+        # curl: HTTP client for forge REST API and other web requests.
+        curl
+        # hive-forge <verb>: CLI wrapping common Forgejo REST API operations
+        # (view, pr, issue, comment, assign, close, labels, branches, etc.)
+        (pkgs.callPackage ../packages/hive-forge-tools.nix { })
+      ]
+      ++ lib.optionals config.hyperhive.github.enable [
+        # gh wrapper + git credential helper for hyperhive.github.enable.
+        # (No bare pkgs.gh here — the wrapper *is* `gh` and hardcodes the real
+        # binary path, so it can't be shadowed.)
+        ghWrapper
+        gitCredHelper
+      ];
+
+    # Wire the GitHub credential helper for `git push` over HTTPS. Host-scoped
+    # to `https://github.com`, so it never touches the forge (localhost:3000)
+    # or any other remote. Gated on hyperhive.github.enable; the helper reads
+    # the PAT from HIVE_GITHUB_TOKEN_FILE at invocation and auths as
+    # `x-access-token` + the PAT. System /etc/gitconfig merges under the agent's
+    # ~/.gitconfig (safe.directory), so this is additive.
+    # Nested-path binding + mkIf (matching the other `environment.etc."…"`
+    # entries above) — a whole-set `environment.etc = {…}` here would collide
+    # with them at the nix level ("attribute already defined").
+    environment.etc."gitconfig" = lib.mkIf config.hyperhive.github.enable {
+      text = ''
+        [credential "https://github.com"]
+        helper = hive-github
+        username = x-access-token
+      '';
+    };
 
     # One-shot: tea config.yml from the seeded forge token. Shape
     # contract (always exit 0, no set -e, skip-silently, re-runnable):