feat: per-workspace script management system

[lyx-tec]

Summary

Add a per-workspace script management system. Users can store shell scripts in workspace metadata, execute them from a quick-select picker, and manage them in a dedicated modal.

Implementation

Data Layer (workspace-scripts.ts)

• Scripts stored in workspace.meta["scripts:list"] with full TypeScript typing via Go-side MetaTSType registration
• WorkspaceScript fields: id, name, command, desc?, lastused? (Unix ms timestamp)
• getScriptsFromWorkspace / saveScriptsToWorkspace / recordScriptRun — CRUD helpers
• runScript(script, blockId?) — builds heredoc pipeline and injects into terminal
• openScriptsPicker(blockId?) — unified entry point for both keyboard shortcut and context menu
• Scripts sorted by lastused descending in the picker

Execution (buildHeredocCommand)

Scripts run via a heredoc → temp file → source → cleanup pipeline:

__WAVE_SCR_FILE=$(mktemp "${TMPDIR:-/tmp}/waveterm-script-XXXXXX")
cat << 'DELIM' > "$__WAVE_SCR_FILE"
<script content>
DELIM
. "$__WAVE_SCR_FILE"; rm -f "$__WAVE_SCR_FILE"

• Uses POSIX . (dot) command instead of source for dash compatibility
• Quoted heredoc delimiter prevents shell expansion in script body
• __WAVE_SCR_FILE naming minimizes collision with user variables
• Blocked on fish, cmd, PowerShell with a message modal

Script Picker (WorkspaceScriptsPicker)

• Triggered by Ctrl+Shift+e (e for execute) or right-click "Run Script…" in terminal
• Search input with magnifying glass icon (InputGroup pattern)
• Arrow-key navigation + Enter to run; click or Enter with no selection runs first
• Hover on list items reveals edit/delete buttons for inline management
• Empty state shows scroll icon + "+ Add Script" button linking to management modal

Script Management Modal (WorkspaceScriptsModal)

• Inline CRUD — editing replaces the card in-place, add form appears at list bottom
• Card shows name, first-line command preview (truncated with ellipsis), and description
• Hover reveals edit/delete action buttons; delete confirms via ConfirmModal
• Escape: cancels form if editing, closes modal otherwise

Integration

• Keyboard shortcut: keymodel.ts registers Ctrl:Shift:e → openScriptsPicker(), returns false if condition not met so the key event propagates
• Context menu: term-model.ts:getContextMenuItems(blockId) — blockId explicitly threaded through to openScriptsPicker(blockId), avoiding getFocusedBlockId() mismatch on right-click
• Workspace editor: ScriptsSection component with live preview card (green accent left border, modal-bg-color background, "+N more" clickable link)

Design Decisions

• runScript returns { ok: boolean; reason?: string } — domain logic does not push modals; the caller (picker) decides how to surface errors
• Shell detection is heuristic (term:localshellpath config) — fish detected by path matching, Windows cmd/PowerShell by path + platform check
• buildHeredocCommand is module-private, not exported
• ScriptRunResult interface is exported for callers to consume

Files Changed

File	Change
pkg/waveobj/wtype.go	Add WorkspaceScript struct + ScriptsList field
pkg/waveobj/wtypemeta.go	Register scripts:list in MetaTSType
pkg/waveobj/metaconsts.go	Auto-generated MetaKey_ScriptsList constant
frontend/types/gotypes.d.ts	Auto-generated WorkspaceScript type + MetaType extension
frontend/app/workspace/workspace-scripts.ts	Core helpers (new file)
frontend/app/modals/workspace-scripts-picker.{tsx,scss}	Script picker modal (new files)
frontend/app/modals/workspace-scripts-modal.{tsx,scss}	Script management modal (new files)
frontend/app/modals/modalregistry.tsx	Register both modals
frontend/app/store/keymodel.ts	Register Ctrl+Shift+e shortcut
frontend/app/view/term/term-model.ts	Add "Run Script…" context menu item
frontend/app/view/term/term.tsx	Pass blockId to getContextMenuItems
frontend/app/tab/workspaceeditor.{tsx,scss}	Add ScriptsSection with live preview
frontend/app/tab/workspaceswitcherdetail.tsx	Pass workspaceId to editor

Note: Auto-generated files (metaconsts.go, gotypes.d.ts) were regenerated via task generate after manual Go changes.