* feat: Add plan mode to the chat agent
Adds a plan mode: the agent investigates read-only, proposes a checklist, and
waits for approval before changing anything. On approval it runs with full
tools and checks items off as it goes. Enforcement reuses the existing
disabled_tools gate.
Includes a slash command: `/plan [on|off]` (and `/toggle plan`) to flip the
plan toggle from the chat input.
- src/tool_security.py, src/mcp_manager.py: read-only allowlist (tools + MCP).
- src/agent_loop.py, routes/chat_routes.py: union the disabled set, prepend the
plan directive, force agent mode.
- static/: plan toggle pill, Approve & Run, dockable plan window, task-list
checkboxes, and the /plan slash command.
- tests/test_plan_mode.py.
* Plan mode: persistent re-referenceable plan + agent write-back
Three improvements so a long plan survives a weak model and stays in reach:
1. Re-reference the plan (out-of-context fix). On the execution turn the frontend
sends the approved checklist back (`approved_plan`); the backend pins it as a
top-of-context `## ACTIVE PLAN` system note (kept by the context trimmer), so
the agent can always re-read the plan instead of losing the thread on a long
run. New `build_active_plan_note()` (unit-tested).
2. Re-open / dock the plan anytime. The plan checklist is stored per-session
(localStorage). When a plan exists, the plan-mode button opens a small menu
("Show plan" / "Plan mode: On/Off") that re-opens the side-dockable plan
window — so it can stay docked while the agent works. The window live-refreshes
as the plan changes.
3. Agent write-back: new `update_plan` tool. The agent calls it to tick steps
`- [x]` after finishing them, or to revise steps when the user asks. Marker
tool (no I/O) → `plan_update` SSE event → the stored plan + docked window
update live. The ACTIVE PLAN note instructs the agent to use it.
Backend: src/agent_loop.py (param + pin + note builder + emit + prompt blurb),
src/tool_execution.py (update_plan handler), routes/chat_routes.py (parse
`approved_plan`, relay `plan_update`), registration in tool_schemas / agent_tools
/ tool_index (always-available, not admin-gated).
Frontend: static/js/chat.js (plan store, send `approved_plan`, handle
`plan_update`, capture restated checklists), static/app.js (plan-button menu),
static/js/planWindow.js (`isPlanWindowOpen`), static/js/storage.js (PLAN key).
Tests: tests/test_plan_mode.py (plan-note), tests/test_update_plan_tool.py.
* Plan mode: drop bash/python, rely on read-only discovery tools
Shell can mutate (write files, hit the network) and can't be constrained to
read-only at the tool layer, so plan mode no longer relies on a prompt to keep
it well-behaved — bash/python are removed from the read-only allowlist and added
to the fail-closed block set. Discovery is covered by the dedicated read-only
tools (read_file, grep, glob, ls) instead.
Rewrites the plan-mode directive to state shell is disabled and lists the
available read-only tools positively. Addresses review feedback on #638.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Comment: note _MCP_READONLY_VERBS are prefixes not whole words
Clarifies that entries like "summar" are intentional stems matched via
startswith (covers summarise/summarize/summary), not typos. Addresses review
feedback on #638.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Plan mode: clarify why gating inverts the allowlist into a denylist
Rename _PLAN_MODE_FALLBACK_BLOCK -> _PLAN_MODE_KNOWN_MUTATORS and rewrite the
comments. The tool gate is a denylist (disabled_tools); plan mode's policy is an
allowlist, so it returns the inverse (all known tool names minus the allowlist).
The static mutator set is a backstop for the schema-derived name list, which
misses XML-only tools and can fail to import. Addresses review feedback on #638.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Plan mode: stop hardcoding the read-only tool list in the directive
The model is already shown its available (read-only) tools by _assemble_prompt,
which removes every disabled tool. Enumerating them again in the directive only
duplicated that list and would drift as tools change. Point at the tools listed
below instead. Addresses review feedback on #638.
* feat: Add workspace: confine agent tools to a folder
Pick a server folder as the agent's workspace so its file/shell tools work
there and don't touch files outside it. File tools are hard-confined; bash/
python run with cwd set to the folder.
Includes a slash command: `/workspace` (alias `/ws`) — show / `set <path>` /
`clear` / `pick` (open the directory browser).
- routes/workspace_routes.py: GET /api/workspace/browse (admin-only).
- src/tool_execution.py: hard path confinement for read_file/write_file;
bash/python cwd. Threaded route → stream_agent_loop → execute_tool_block.
- src/agent_loop.py: workspace note prepended to the system prompt.
- static/: overflow menu item, input-bar pill, directory-browser modal, and
the /workspace slash command.
- tests/test_workspace_confine.py.
* Wire workspace confinement into tools that landed after this PR
edit_file (#1239) and grep/glob/ls (#1670) merged after workspace-confine was
written, so they bypassed the workspace boundary. Thread the workspace through:
- edit_file: _do_edit_file resolves via _resolve_tool_path_in_workspace
- grep/glob/ls: _resolve_search_root confines to the workspace (root + paths)
- bash/python/bg cwd: workspace or _AGENT_WORKDIR (keep the #2586 data-dir
default when no workspace is set)
Tests cover edit_file + grep/ls confinement (inside ok, outside rejected).
* Workspace picker: editable path bar + modal style cohesion + cross-platform hardening
- Make the current-folder strip an editable address bar: type/paste a full
path and press Enter to navigate (also reaches other Windows drives and
hidden dirs the up-only browser cannot).
- Reuse shared modal CSS: drop bespoke .workspace-modal-content/.workspace-btn*
in favour of base .modal-content/.modal-body and the .confirm-btn button
family; separators/hover use var(--border). Net -31 CSS lines.
- Fix the path field overflowing the modal right edge (flex stretch + margin
vs an overflow:auto scrollbar-feedback loop): full-bleed, no h-margin.
- Cross-platform confinement: normcase the workspace commonpath check so
containment holds on case-insensitive filesystems (Windows/macOS).
- Make tests OS-portable: sibling temp dirs instead of /etc, python os.getcwd()
instead of pwd. 5 pass.