Introduce a full image-pipeline template: add README, frontend UI, new nodes, icons, API clients, worker routes/providers, and styling.

Highlights:
- New README with setup, providers, nodes, and deployment docs.
- App layout: add ImagePipelineSidebar and integrate it into the canvas; expose editor state for the sidebar.
- Sidebar: draggable node palette to create nodes on the canvas.
- Toolbar: reorganized PipelineToolbar, moved template picker into a popover and added default quick actions and actions menu.
- Node UI: Node footer with Play/Stop execution controls, duplicate/download/clear actions, and related dropdown menu.
- Connection logic: ConnectionShapeUtil now tracks and replaces pending connections when reconnecting to occupied ports to avoid duplicates and cycles.
- API: pipelineApi adds apiIPAdapter and apiStyleTransfer with local SVG placeholders for offline dev.
- New node types: IP Adapter and Style Transfer registered; node height/constants updated to account for node footers.
- Icons: IPAdapterIcon, StyleTransferIcon (and other small icon additions referenced in nodes).
- CSS: extensive styles for node footer, sidebar, template popover, load image node, and overall image-pipeline layout.
- Worker: new provider modules (openai, replicate, stability, google, placeholder) and routes (ipAdapter, styleTransfer) plus related worker changes to support the new endpoints.

These changes add image-guided and style-transfer capabilities, a sidebar node picker, improved node controls and UX, and backend worker plumbing for multiple providers.

Introduce a new GenerateText node (UI, icon, CSS, and worker route) and backend API to generate text from multimodal inputs with a placeholder fallback. Add multi-connection/input support across the pipeline: port multi flag, InfoValue multi types, input aggregation, execution graph handling, and UI/display adjustments (copy text, result area). Refactor image providers to consolidate on Replicate (remove several provider files), add Replicate handlers for SD and Google models, and simplify provider selection. Misc: worker config env var cleanup, executionState race-safety fix, minor node layout/ordering tweaks, and other small fixes.

Add typed port compatibility checks and tooling for the image-pipeline template. Introduces a new portCompatibility util and updates connection/insert/pointer flows to choose the first compatible port when creating nodes mid-connection (prevents invalid connections and enables type-aware node insertion).

Other updates:
- Add dynamic node toolbar items (auto-generate ToolbarItem per node definition).
- Improve node result handling: unify result keys, support multiple output types, and clear all result fields.
- Make Iterator node return current item and parse multiline items correctly.
- Change default model provider to `flux:flux-dev` and randomize seed for generated nodes.
- Documentation: overhaul README (features, setup, endpoints, models, deploy instructions).

These changes improve UX when wiring typed nodes and make the template docs and defaults clearer for local development.

Introduce explicit ordering for connections and robust input coercion, and add per-node resultKeys.

- ConnectionBindingUtil: add optional order prop, auto-assign order for end-terminal bindings, and persist order on create/update.
- ExecutionGraph & nodePorts: sort inbound connections by order when assembling inputs so multi-input ports are deterministic.
- NodeShapeUtil & node types: replace a global RESULT_KEYS with per-definition resultKeys and use node definition defaults to detect/clear results. Update many node definitions to declare resultKeys.
- shared.tsx: add NodeDefinition.resultKeys and helper utilities (coerceToText/coerceToNumber, getInput, getInputMulti, getInputText, getInputNumber) for safe input handling.
- GenerateText and worker route: coerce input to string everywhere (api + worker) to avoid runtime errors when treating inputs as text, and use coerced values in placeholders and prompt/image handling.
- Minor: guard against missing outputs when collecting port values.

These changes make input handling safer, allow ordered multi-input connections, and provide a consistent way to track and clear node results.

Add a reference-image port to the Generate node and pass referenceImageUrl through to providers; default model changed to flux:flux-dev. Propagate reference image into Flux/Google Replicate requests and remove older Stable Diffusion handling from the Replicate provider. Mark image previews and text results as loading when a node is out-of-date (shimmer animation + placeholder styling), update NodeImagePreview to use contain, and add conditional classes to many node components. UI tweaks: adjust node row/header sizing, button/icon sizes and paddings, stop context-menu propagation for input/select/textarea inside nodes, and small color tweak for the generic port. Also improve prompt handling and adjust Generate node body height to accommodate the new image port.

Introduce a new Image Pipeline starter kit: adds docs (starter-kits/image-pipeline.mdx), bento UI entry, and overview listing. Add template files under templates/image-pipeline (package.json, icon, CSS, node utilities and types) including a new resizable Capture node that can capture a canvas region to an image URL. Update NodeShapeUtil and node infrastructure to support variable node widths and optional resizable nodes (getNodeWidthPx, canResizeNode, onResize changes), and add styling for the Capture node. Also bump template ordering in create-tldraw and package.jsons for image-pipeline, branching-chat, and shader.

Remove the local placeholder image provider and inline placeholder generators, and update the Replicate provider to throw when REPLICATE_API_TOKEN is not configured. Add a NodeImage component that hides itself on load errors and replace many <img> usages across node components to use NodeImage. Sidebar and on-canvas picker behavior adjusted to skip hidden/empty node categories and move prompt_concat to the appropriate group; NodeDefinitions ordering updated accordingly. Update README to reflect that generation will fail without a token.