Replaces the linenoise library with isocline for improved REPL
functionality. Updates build scripts and moves completion state from
global variables into the Terminal struct.
- Rebuild `message_arena` during self-heal to prevent memory accumulation.
- Optimize `minify` comptime performance by avoiding string concatenation.
- Update `extractText` to use `runEval` and sentinels for better reliability.
- Add logging for long environment variable names in `lookupLpEnv`.
Adds a visual spinner to the REPL to indicate agent activity (thinking
or tool execution). Refactors terminal output to prevent interleaving
with spinner frames.
- Rename `Command.buildJson` to `stringifyJson` for clarity.
- Flatten tool call recording loop in `Agent.zig` to reduce nesting.
- Extract `parseValue` helper in `tools.zig` to reduce duplication.
- Optimize `substituteEnvVars` by skipping redundant string scans.
Removes pre-state tracking and click verification from the agent.
Consolidates provider requirement validation logic and optimizes
`applyReplacements` by pre-calculating memory capacity.
- Extract `awaitQueuedNavigation` and `mapActionError` in `tools.zig`.
- Optimize `substituteEnvVars` using `indexOfScalarPos` to reduce copies.
- Switch to `parseFromSliceLeaky` for tool arguments parsing.
- Improve error handling in `Agent.zig` self-healing and `Recorder.zig`.
- Simplify `callEval` by adding `evalScript` helper.
- Skip JSON parsing in Terminal for non-JSON tool results to avoid unnecessary allocations.
- Simplify `$LP_` environment variable detection in tools.
- Update documentation comments in Agent for clarity.
- Reorder `arena` and `session` arguments in tool functions.
- Optimize `substituteEnvVars` to only process `$LP_` prefixes.
- Use stack buffer for backup paths in `Agent.zig`.
- Clean up `formatActionResult` implementation.
- Fix typo in REPL info message.
- Optimize Recorder to avoid unnecessary allocations.
- Simplify field type detection in SlashCommand using stringToEnum.
- Remove unused yellow ANSI constant in Terminal.
- Shorten log message in McpServer.
Restricts self-heal turns to only allow page-local commands. Commands
like `goto` and `eval_js` are now ignored to prevent the model from
navigating away or executing arbitrary scripts during healing.
