fix: hivectl choom passes the harness --settings/--mcp-config/--system-prompt-file so claude gets settings + tools + persona

docs/tools/hivectl.md

@@ -124,10 +124,19 @@ Without `--fresh`, `--continue` is passed so the operator joins the
 agent's live context window. With `--fresh` a clean session starts.
 The container must be running.
 
-The session is entered **as the agent user**, not root: `machinectl
-shell` defaults to root in the container, which would make claude read
-`/root/.claude` (empty) instead of the agent's `/home/<name>/.claude`
-where its OAuth credentials + settings live. choom prefixes the
-machine with `<name>@` (the meta-flake sets the agent's unix user name
-to its label) and `cd`s into `/agents/<name>/state` first so
-`--continue` resolves the same per-project session the harness runs.
+choom reproduces the harness's own claude invocation so the operator
+lands in a faithful copy of the agent's environment:
+
+- **as the agent user**, not root: `machinectl shell` defaults to root,
+  which would make claude read `/root/.claude` (empty) instead of the
+  agent's `/home/<name>/.claude` where its OAuth credentials live. choom
+  prefixes the machine with `<name>@` (the meta-flake sets the agent's
+  unix user name to its label).
+- **from `/agents/<name>/state`**: `--continue` resolves the session for
+  that project dir and `CLAUDE.md` (the persona) loads from the cwd.
+- **with the harness flags**: `--settings`, `--mcp-config`, and
+  `--system-prompt-file` from `/run/hive-config/` — the same files the
+  harness writes each turn — so the operator gets the agent's settings,
+  the hyperhive/matrix MCP tools (which `--continue` needs to replay a
+  tool-using history), and the role prompt. Each flag is included only
+  when its file exists.