Status: active · Task: input-bar-controls · Source plan: 04-implementation-plan.md

Mobile Input-Bar Controls (ActionsPopover + Deep-Research Toggle) — PR Roadmap

Approach B — Web-Parity-First. Four review-sized PRs, ordered so the deep-research toggle works end-to-end at PR 2 (the walking skeleton) and the tools menu + sources layer on after. Each PR leaves main releasable; new controls are only visible when their gates pass, so partial merges are inert without a feature flag.

PR 1 merges the former "plumbing" and "primitives" PRs into one foundation (owner decision at GATE 3, 2026-07-16). It is a no-runtime-surface PR (types, pure logic, primitives, icons — nothing wired into chat), so it stays coherent, but it lands above the ~500-700 band (~950-1,150 LOC).

Overview

Sequence

PR1 foundation (send-body + pure contracts + SelectButton/Switch + icons)
      │
      ▼
PR2 deep-research toggle (walking skeleton) ─► PR3 ActionsPopover (tools) ─► PR4 sources + coupling

PR 1 is the shared foundation (no runtime surface). PR 2 is the thin end-to-end slice that proves the composer→provider→submit shape. PR 3 introduces the anchored popover (the on-device gate) with its first real consumer. PR 4 completes Tier-2.

PR 1 — feat(mobile): tool-options foundation — send-body, contracts, primitives, icons

• Goal: Land the entire no-runtime-surface foundation — wire types, pure logic, reusable primitives, and icons — so PR 2-4 only add state + wiring. Nothing is visible in the app yet.
• Scope (in):
  • Send-body + types: widen SendMessageBody with allowed_tool_ids?/forced_tool_id?/ internal_search_filters? + the InternalSearchFilters type; widen MinimalAgent with tools/knowledge_sources; add deep_research_enabled? to WorkspaceSettings.
  • Submit threading: submit(text, files?, onAccepted?, toolOptions?); replace hardcoded deep_research: false and populate the three new body fields (no-op when toolOptions absent).
  • Pure modules: chat/tools.ts (ToolSnapshot, tool-id constants, predicates, computeAllowedToolIds, getIconForToolId) + chat/sources.ts (DocumentSource, SOURCE_META, buildInternalSearchFilters).
  • Primitives: select-button.tsx + select-button.styles.ts (SELECT_COLORS literal matrix + resolveSelectState, select-light, foldable via conditional label render — no hover); switch.tsx (reanimated track/thumb).
  • Icons: the 8 SVGs (hourglass, globe, cpu, link, server, plug, unplug, slash) with the verbatim path data from 04's appendix.
• Out of scope: the anchored Popover (PR 3, with its consumer); any hooks, provider, or chat wiring; any network calls beyond the existing send path.
• Files:

  File	New/Modified	This PR's slice
  mobile/src/api/chat/stream.ts	modified	send-body fields + InternalSearchFilters
  mobile/src/chat/agents.ts	modified	widen MinimalAgent
  mobile/src/api/settings.ts	modified	deep_research_enabled
  mobile/src/hooks/useChatController.ts	modified	submit toolOptions arg + body build
  mobile/src/chat/tools.ts	new	tool contract + predicates
  mobile/src/chat/sources.ts	new	source contract + filter builder
  mobile/src/components/ui/select-button.tsx + .styles.ts	new	pill primitive
  mobile/src/components/ui/switch.tsx	new	toggle primitive
  mobile/src/icons/{hourglass,globe,cpu,link,server,plug,unplug,slash}.tsx	new	8 icons
  mobile/src/chat/__tests__/tools.test.ts	new	pure-logic tests
  mobile/src/components/ui/__tests__/select-button.test.tsx	new	state/matrix render

• Est. size: ~950-1,150 LOC. Above the band by owner choice (merged plumbing + primitives). It stays coherent because nothing here is wired into the running app — it's all foundation. If it feels too large in review, the natural re-split is back into "plumbing/contracts" vs "primitives/icons".
• Depends on: —
• Feature-flag state: N/A — additive/optional fields; deep_research still effectively false (no UI sets it); primitives unused. Backwards compatible.
• Tests on merge: jest unit — computeAllowedToolIds (null vs list, never []), hasSearchToolsAvailable, displayableTools filtering, buildInternalSearchFilters; a controller test asserting submit threads toolOptions; SelectButton empty/selected/disabled cell resolution; Switch toggle; icons render at default size.
• Drift checkpoint: re-confirm the backend SendMessageRequest field names/types (models.py:110-117), that /persona still serves tools+knowledge_sources, and that button.styles.ts's matrix shape (mirrored by SELECT_COLORS) is unchanged. Use port-web-component-to-mobile for SelectButton/Switch.

PR 2 — feat(mobile): deep-research toggle (walking skeleton)

• Goal: Prove the composer→provider→submit path end-to-end with the simplest control.
• Scope (in):
  • useDeepResearchToggle (port with the ref-guarded null→new-session preservation + agent reset).
  • ComposerToolsProvider (deep-research only for now; resolveToolOptions() returns deep_research, the rest null).
  • ToolbarControls rendering just the deep-research SelectButton (gated by deep_research_enabled && hasSearchToolsAvailable).
  • Wire ComposerToolsProvider into ChatSurface; render ToolbarControls in InputBar's left cluster; thread resolveToolOptions() into sendWithAttachments→submit.
• Out of scope: the Actions menu, popover, tools/sources state.
• Files:

  File	New/Modified	This PR's slice
  mobile/src/hooks/useDeepResearchToggle.ts	new	ephemeral toggle + resets
  mobile/src/state/ComposerToolsProvider.tsx	new	provider (deep-research slice)
  mobile/src/components/chat/ToolbarControls.tsx	new	deep-research pill only
  mobile/src/components/chat/InputBar.tsx	modified	render ToolbarControls
  mobile/src/components/chat/ChatSurface.tsx	modified	provider + thread options
  mobile/src/hooks/__tests__/useDeepResearchToggle.test.ts	new	reset matrix

• Est. size: ~450-550 LOC.
• Depends on: PR 1 (submit/plumbing, SelectButton, hourglass icon).
• Feature-flag state: N/A — gated by the deep_research_enabled admin setting; invisible when off.
• Tests on merge: jest — the reset matrix (preserve on null→new-session, reset on real switch + agent change); ToolbarControls gating (pill hidden without the setting or a search tool). Manual: toggle on → send → request carries deep_research: true.
• Drift checkpoint: confirm the ChatSurface/InputBar seams from PR 1 are unchanged and that sessionId/agentId are available where the provider mounts.

PR 3 — feat(mobile): actions popover — tools, force + enable/disable

• Goal: The anchored Actions menu with tool forcing + server-persisted enable/disable.
• Scope (in):
  • popover.tsx (anchored: measureInWindow, Portal, upward + clamp + maxHeight/scroll, Keyboard.dismiss() on open, re-measure on keyboard/rotation).
  • ActionsPopover.tsx (composes Popover, owns open/subView) + ActionLineItem.tsx (tap=force with disable-clears-force guard; trailing Switch enable/disable; search-drill-in chevron).
  • useForcedTools + useAgentPreferences (+ api/chat/agentPreferences.ts, optimistic onMutate/onError/onSettled + debounce).
  • Extend ComposerToolsProvider + ToolbarControls (Actions trigger + forced-tool pills); wire forced_tool_id + allowed_tool_ids.
• Out of scope: the source sub-view + coupling (PR 4); MCP/OAuth rows; action search box.
• Files:

  File	New/Modified	This PR's slice
  mobile/src/components/ui/popover.tsx	new	anchored popover primitive
  mobile/src/components/chat/ActionsPopover.tsx	new	menu shell + primary list
  mobile/src/components/chat/ActionLineItem.tsx	new	tool row (force + enable/disable)
  mobile/src/hooks/useForcedTools.ts	new	single-force state
  mobile/src/hooks/useAgentPreferences.ts	new	GET + optimistic PATCH
  mobile/src/api/chat/agentPreferences.ts	new	prefs API wrappers
  mobile/src/api/query-keys.ts	modified	agentPreferences key
  mobile/src/state/ComposerToolsProvider.tsx	modified	force + disabled slices
  mobile/src/components/chat/ToolbarControls.tsx	modified	Actions trigger + forced pills

• Est. size: ~650-750 LOC. Near the top of the band and can't split further — the anchored Popover has no other consumer, so building it apart from ActionsPopover would leave an untestable PR; force + enable/disable share the same row and provider.
• Depends on: PR 2.
• Feature-flag state: N/A — the Actions trigger only renders when the agent has displayable tools.
• Tests on merge: jest — useForcedTools single-force + agent reset; useAgentPreferences optimistic set → PATCH full array → invalidate → rollback on error; ActionLineItem force + disable-clears-force. On-device gate (owner-run): anchored popover opens upward without keyboard collision / off-screen clipping on iOS + Android after expo prebuild; fallback = swap the popover container for the FilePickerSheet bottom-sheet shell.
• Drift checkpoint: confirm the prefs endpoints (GET /user/assistant/preferences, PATCH /user/assistant/{id}/preferences) are unchanged; decide the final no-hover enable/disable affordance (default: trailing Switch) before coding the row.

PR 4 — feat(mobile): actions popover — source selection + search coupling

• Goal: Complete Tier-2 with the source sub-view and the web-faithful search↔source coupling.
• Scope (in):
  • SourceSwitchList.tsx (back + Enable-All/Disable-All + Switch rows) + SourceIcon.tsx; in-place body swap in ActionsPopover.
  • useConnectorSources (+ api/chat/connectors.ts, GET /manage/connector-status) + useSourceSelection (ephemeral, self-init to all).
  • Wire internal_search_filters; then add the search-tool↔source coupling as an isolated commit (port the sourcesInitialized guard + single-force + previouslyEnabledSourcesRef idempotency).
  • Populate SOURCE_META; default-agent (id 0) uses the connector list.
• Out of scope: federated connectors (EE /federated) — documented gap.
• Files:

  File	New/Modified	This PR's slice
  mobile/src/components/chat/SourceSwitchList.tsx	new	source sub-view
  mobile/src/components/chat/SourceIcon.tsx	new	source glyph
  mobile/src/hooks/useConnectorSources.ts	new	connector-status query
  mobile/src/api/chat/connectors.ts	new	connector-status wrapper
  mobile/src/hooks/useSourceSelection.ts	new	selection + coupling
  mobile/src/api/query-keys.ts	modified	connectorSources key
  mobile/src/chat/sources.ts	modified	fill SOURCE_META
  mobile/src/components/chat/ActionsPopover.tsx	modified	mount sub-view + chevron
  mobile/src/state/ComposerToolsProvider.tsx	modified	source slice + filters
  mobile/src/hooks/__tests__/useSourceSelection.test.ts	new	coupling reducer

• Est. size: ~550-650 LOC.
• Depends on: PR 3.
• Feature-flag state: N/A.
• Tests on merge: jest — buildInternalSearchFilters ({source_type} vs null); the coupling reducer (enable source→pin search, disable-last→unpin, enable-all/disable-all, no oscillation once initialized). Manual: pick sources → send → request carries internal_search_filters.source_type.
• Drift checkpoint: confirm /manage/connector-status is reachable by a chat-accessible user and its BasicCCPairInfo{source} shape; re-read the web coupling logic (ActionsPopover/index.tsx:742-810) immediately before porting it, since it is the loop-prone part.