Code

Code is an editor workbench with the map and your assistant a keystroke away. Press Cmd 2, or Alt 2 on Linux and Windows.

With no project open it reads Understand any codebase, with a New scratch file button.

The workbench

The sidebar holds the file Explorer. Beside it are tabs, split views, breadcrumbs and a status bar. Beyond text it has viewers for diffs, images, tables and markdown preview.

Explorer actions include New File, New Folder, Collapse All and Select files. Selection mode lets you Ask AI to review, refactor, document or delete the selected files.

Tabs have Pin, Close Others, Close to the Right, Reopen Closed Tab and Split Right.

If a file changes on disk under you, a bar offers Compare, Reload, Keep mine and Overwrite disk.

Merge conflicts

Conflicts open a merge editor with Current (ours), Incoming (theirs) and Result. Each conflict has Accept Current, Accept Incoming and Accept Both. Move with Prev and Next. When it reads All conflicts resolved, choose Complete merge.

Problems and output

Open Problems and output from Open a pane, in the Code group. It has four tabs.

• Problems shows diagnostics from the language servers and linters your project resolves to. Scope to Current file or Project, filter by severity, Copy problems, or hand one to your assistant with Fix with Agent. Clean, it says No problems detected.
• Output shows each run of a tool Jensen started, with Copy output, Wrap output, Open log, Clear output and Fix with Agent.
• TODO lists everything marked in the project, with Rescan.
• Debug carries the debugger.

AI in the editor

Surface	What it does
Jensen Actions (Cmd .)	A menu of fixes, refactors, navigation and project actions. Includes Rename Symbol, Find Usages, Show Recent Changes and Ask Agent about this.
Assistant section in the editor menu	Summarize This File. With a selection, Ask the Assistant to explain, refactor, write tests or add docs.
Show in Graph	Opens the project graph pane.

Both menus work from the right-click menu on a symbol or selection.

Find things

Press Cmd P for Go to File, Cmd E for the Fuzzy Finder, or Cmd Shift F for Find in Files. One box takes files, text or a question in words: Search files, text, or ask in words.

• Files, by name.
• Text, with Match case, Whole word and Regular expression.
• Semantic, which searches by meaning over what Jensen has indexed.

Replace in Files applies a change across the matches and says how many files it will touch first.

Ctrl G goes to a line, and Cmd T searches symbols across the project.

Language tooling

Jensen bundles no language server, formatter, linter or debugger. It uses what your machine has and installs what you ask for from a public catalog into its own directory.

Selection follows the project, not a fixed order. A tool your repository configures beats a higher ranked rival. A binary beside the project beats a global one. Both are searched from the edited file upward, so a package in a monorepo gets its own answer.

Open Settings, Extensions, LSP. The Language tooling view lists what each language resolves to, marks the tools your repository chose, names what is declared but not installed, and installs it. Filter by Servers, Formatters, Linters or Debuggers.

To override a choice, use Edit for this project or Edit for every project. Both edit a single tools.yaml in your Jensen config folder, and project overrides live in their own section of it. Jensen reads a project’s override only once you trust the workspace, because a tool entry decides which program runs. See Trust and permissions.

Run your project

Run in the file view header detects the services in your repository and starts them. It becomes Stop while they run. Its menu opens the run panel.

The Run drawer has:

• Run all, Stop all and Re-detect services.
• A box to run a make target, a script or any command.
• Per service Open, Stop, Restart and Run, with live logs and an unseen error marker.
• Edit servers.yaml to correct what Jensen detected.

With nothing found it says No services detected, with a Detect services button. With nothing running it says Nothing is running. Services that answer on a port but did not start from Jensen show under Started outside Jensen, without logs.

Running project commands needs a trusted workspace. See Trust and permissions.

Debugging

The toolbar has Start debugging (F5), Continue, Pause, Step over (F10), Step into (F11), Step out (Shift F11) and Stop (Shift F5). The debug view shows the call stack, variables and a console you can evaluate in, plus watch expressions.

Debug adapters are found and installed like every other tool, and need a trusted workspace. Your assistant can drive the same debugger instead of guessing from a stack trace. See the assistant tool reference.

Vim mode

Use Enable Vim Mode in the command palette. The status bar then shows VIM.