Project: observer-sessions · Branch: HEAD · Mode: default · Model: claude-haiku-4-5-20251001 Stats: 32 user messages, 2 tool calls, tools used: TaskList. Conversation Turn 1 — User You are a Claude-Mem, a specialized observer tool for creating searchable memory FOR FUTURE SESSIONS. CRITICAL: Record what was LEARNED/BUILT/FIXED/DEPLOYED/CONFIGURED, not what you (the observer) are doing. You do not have access to tools. All information you need is provided in messages. Create observations from what you observe - no investigation needed. claude-mem:learn-codebase 2026-05-20 Your job is to monitor a different Claude Code session happening RIGHT NOW, with the goal of creating observations and progress summaries as the work is being done LIVE by the user. You are NOT the one doing the work - you are ONLY observing and recording what is being built, fixed, deployed, or configured in the other session. SPATIAL AWARENESS: Tool executions include the working directory (tool_cwd) to help you understand: - Which repository/project is being worked on - Where files are located relative to the project root - How to match requested paths to actual execution paths WHAT TO RECORD -------------- Focus on durable technical signal: - What the system NOW DOES differently (new capabilities) - What shipped to users/production (features, fixes, configs, docs) - Changes in technical domains (auth, data, UI, infra, DevOps, docs) - Concrete debugging or investigative findings from logs, traces, queue state, database rows, and code-path inspection Use verbs like: implemented, fixed, deployed, configured, migrated, optimized, added, refactored, discovered, confirmed, traced ✅ GOOD EXAMPLES (describes what was built or learned): - "Authentication now supports OAuth2 with PKCE flow" - "Deployment pipeline runs canary releases with auto-rollback" - "Database indexes optimized for common query patterns" - "Observation queue for claude-mem session timed out waiting for an agent pool slot" - "Fallback processing abandoned pending messages after Gemini and OpenRouter returned 404" ❌ BAD EXAMPLES (describes observation process - DO NOT DO THIS): - "Analyzed authentication implementation and stored findings" - "Tracked deployment steps and logged outcomes" - "Monitored database performance and recorded metrics" WHEN TO SKIP ------------ Skip routine operations: - Empty status checks - Package installations with no errors - Simple file listings with no follow-on finding - Repetitive operations you've already documented - File related research that comes back empty or not found If skipping, return an empty response only. Do not explain the skip in prose. OUTPUT FORMAT ------------- Output observations using this XML structure: [ bugfix | feature | refactor | change | discovery | decision | security_alert | security_note ] [title: Short title capturing the core action or topic] [subtitle: One sentence explanation (max 24 words)] [Concise, self-contained statement] [Concise, self-contained statement] [Concise, self-contained statement] [narrative: Full context: What was done, how it works, why it matters] Bash 2026-05-20T10:09:19.245Z /Users/USER/workspace/doctolib/oxygen "{\"command\":\"find /Users/USER/workspace/doctolib/oxygen -maxdepth 3 -type f -name \\\".md\\\" | head -50 && echo \\\"---\\\" && ls /Users/USER/workspace/doctolib/oxygen/\",\"description\":\"Explore top-level structure and markdown files\"}" "{\"stdout\":\"/Users/USER/workspace/doctolib/oxygen/README.md\\n/Users/USER/workspace/doctolib/oxygen/CLAUDE.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/potential-improvements.md\\n/Users/USER/workspace/doctolib/oxygen/agents/review-code-quality.md\\n/Users/USER/workspace/doctolib/oxygen/agents/migrate-deprecated-components.md\\n/Users/USER/workspace/doctolib/oxygen/docs/illustrative-icon-catalog.md\\n/Users/USER/workspace/doctolib/oxygen/docs/tep-lifecycle.md\\n/Users/USER/workspace/doctolib/oxygen/docs/token-reference.md\\n/Users/USER/workspace/doctolib/oxygen/docs/component-index-b2c.md\\n/Users/USER/workspace/doctolib/oxygen/docs/code-quality.md\\n/Users/USER/workspace/doctolib/oxygen/docs/component-patterns.md\\n/Users/USER/workspace/doctolib/oxygen/docs/task-workflows.md\\n/Users/USER/workspace/doctolib/oxygen/docs/code-style.md\\n/Users/USER/workspace/doctolib/oxygen/docs/component-index-b2b.md\\n/Users/USER/workspace/doctolib/oxygen/docs/commands.md\\n/Users/USER/workspace/doctolib/oxygen/docs/glossary.md\\n/Users/USER/workspace/doctolib/oxygen/docs/tep-poc-workflow.md\\n/Users/USER/workspace/doctolib/oxygen/docs/storybook-patterns.md\\n/Users/USER/workspace/doctolib/oxygen/docs/index.md\\n/Users/USER/workspace/doctolib/oxygen/docs/testing-patterns.md\\n/Users/USER/workspace/doctolib/oxygen/docs/build-ordering.md\\n/Users/USER/workspace/doctolib/oxygen/docs/a11y-patterns.md\\n/Users/USER/workspace/doctolib/oxygen/docs/component-index-core.md\\n/Users/USER/workspace/doctolib/oxygen/docs/repo-structure.md\\n/Users/USER/workspace/doctolib/oxygen/docs/figma-code-connect.md\\n/Users/USER/workspace/doctolib/oxygen/docs/audit-ds-usage.md\\n/Users/USER/workspace/doctolib/oxygen/docs/ci-cd.md\\n/Users/USER/workspace/doctolib/oxygen/docs/incremental-scope.md\\n/Users/USER/workspace/doctolib/oxygen/docs/ai-comprehension.md\\n/Users/USER/workspace/doctolib/oxygen/docs/icon-catalog.md\\n/Users/USER/workspace/doctolib/oxygen/docs/component-lifecycle.md\\n/Users/USER/workspace/doctolib/oxygen/.claude-plugin/README.md\\n/Users/USER/workspace/doctolib/oxygen/.github/pull_request_template.md\\n/Users/USER/workspace/doctolib/oxygen/docs/automation-scenarios/index.md\\n/Users/USER/workspace/doctolib/oxygen/docs/automation-scenarios/as-a-contributor.md\\n/Users/USER/workspace/doctolib/oxygen/docs/automation-scenarios/as-a-consumer.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/agents/review-code-quality.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/validate-consumer-inputs.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/self-healing-context.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/recovery-discipline.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/self-improvement.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/git-workflow.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/component-lifecycle-exports.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/verify-component-api.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/css-nesting.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/just-in-time-context.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/composition-over-css.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/code-generation-guardrails.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/poc-exception.md\\n/Users/USER/workspace/doctolib/oxygen/.claude/rules/visual-verification.md\\n---\\nagents\\nCLAUDE.md\\nCODEOWNERS\\ncommitlint.config.ts\\ …(truncated, 871 more chars) Turn 3 — User Bash 2026-05-20T10:09:19.258Z /Users/USER/workspace/doctolib/oxygen "{\"command\":\"ls /Users/USER/workspace/doctolib/oxygen/packages/ && echo \\\"---\\\" && ls /Users/USER/workspace/doctolib/oxygen/docs/ 2>/dev/null | head -50\",\"description\":\"List packages and docs directories\"}" "{\"stdout\":\"b2b\\nb2c\\ncodemods\\ncore\\nicons\\nillustrative-icons\\nmcp\\nplayground\\nstorybook-config\\nstorybook-hub\\ntoast\\ntokens\\n---\\na11y-patterns.md\\nai-comprehension.md\\naudit-ds-usage.md\\nautomation-scenarios\\nbuild-ordering.md\\nci-cd.md\\ncode-quality.md\\ncode-style.md\\ncommands.md\\ncomponent-index-b2b.md\\ncomponent-index-b2c.md\\ncomponent-index-core.md\\ncomponent-lifecycle.md\\ncomponent-patterns.md\\nfigma-code-connect.md\\nglossary.md\\nicon-catalog.md\\nillustrative-icon-catalog.md\\nincremental-scope.md\\nindex.md\\nrepo-structure.md\\nstorybook-patterns.md\\ntask-workflows.md\\ntep-lifecycle.md\\ntep-poc-workflow.md\\ntesting-patterns.md\\ntoken-reference.md\",\"stderr\":\"\",\"interrupted\":false,\"isImage\":false,\"noOutputExpected\":false}" Return either one or more ... blocks, or an empty response if this tool use should be skipped. Concrete debugging findings from logs, queue state, database rows, session routing, or code-path inspection count as durable discoveries and should be recorded. Never reply with prose such as "Skipping", "No substantive tool executions", or any explanation outside XML. Non-XML text is discarded. Read 2026-05-20T10:09:23.807Z /Users/USER/workspace/doctolib/oxygen "{\"file_path\":\"/Users/USER/workspace/doctolib/oxygen/docs/index.md\"}" "{\"type\":\"text\",\"file\":{\"filePath\":\"/Users/USER/workspace/doctolib/oxygen/docs/index.md\",\"content\":\"# Documentation Index\\n\\n## File types and their purpose\\n\\n- Source (.tsx) — Component implementation. Contains the API (props, types, JSDoc), behavior details, and general documentation. Primary reference for understanding what a component does and how to configure it.\\n- Stories (.stories.tsx) — Usage examples showing how to use a component in different contexts, prop combinations, and specific needs. Read stories to understand practical usage patterns.\\n- Figma (.figma.tsx) — Code Connect files describing how a component maps to its Figma counterpart — variant properties, boolean toggles, and instance swaps. Read to understand the design-to-code relationship.\\n- Interaction tests (.interactions.stories.tsx) — Expected behavior of the component in terms of functionality. Documents and tests how the component should respond to user interactions.\\n- A11y interaction tests (.a11y.interactions.stories.tsx) — Specific accessibility criteria. Documents and tests keyboard navigation, screen reader announcements, ARIA attribute behavior, and focus management.\\n- Test helpers (.test-helpers.ts) — Utilities for retrieving and interacting with a component in consumer tests.\\n- Docs (.md, .mdx) — Additional documentation on patterns, composition of components, accessibility guidelines, and integration guides. Found alongside components or in dedicated directories.\\n\\n## Quick Lookup by Task\\n\\nLoad only the docs listed for your current task — do not preload the full table.\\n\\n| Task | Docs to load |\\n| -------------------------------- | ---------------------------------------------------------------------------------------- …(truncated, 19030 more chars) Turn 3 — Assistant discovery Oxygen monorepo uses Nx 19.7.3 with 10 design system packages Design system monorepo with core, B2B, B2C, tokens, icons, and utility packages Package manager: npm with workspaces Monorepo tool: Nx 19.7.3 Node requirement: >=20.19.0 TypeScript: ^5.5.4 Storybook: 9.x Vitest: ^3.0.7 10 packages: core, b2b, b2c, icons, illustrative-icons, tokens, toast, codemods, storybook-config, storybook-hub The Oxygen design system is a Nx-managed monorepo with npm workspaces. Core package contains 300+ components organized into 8 categories (actions, collection, dataDisplay, feedbacks, forms, layout, navigation, overlays). B2B and B2C packages provide variant components. Supporting packages handle icons, illustrative icons, design tokens via Style Dictionary, toast notifications, codemods for migrations, and Storybook infrastructure. The project uses TypeScript, React 18/19, CSS Modules, SCSS, Tailwind CSS, and React Aria for accessibility. how-it-works what-changed docs/repo-structure.md discovery Comprehensive task-based documentation index with quick lookup tables Documentation organized by developer task with targeted file lists to load per workflow docs/index.md provides task-to-documentation mapping (11 task types) File types documented: Source (.tsx), Stories (.stories.tsx), Figma (.figma.tsx), Interaction tests, A11y tests, Test helpers, Markdown docs 24 documentation files covering patterns, lifecycle, testing, accessibility, CI/CD, and component indexes Component indexes per package: component-index-core.md, component-index-b2b.md, component-index-b2c.md External manifest: Storybook component catalog (manifests/components.json) with machine-readable API and prop info The project maintains a documentation index that maps developer workflows to specific documentation files. Rather than preloading all docs, the index guides developers to load only relevant files for their current task—e.g., "Create a new component" loads component-patterns.md, component-lifecycle.md, code-style.md, token-reference.md, storybook-patterns.md, and component-index-{package}.md. Documentation covers code patterns, accessibility requirements, testing strategy, styling/tokens, component lifecycle maturity stages, Figma integration, form patterns, icon catalogs, code quality principles, and CI/CD workflows. External Storybook manifests provide machine-readable component catalogs for runtime API lookups. how-it-works pattern docs/index.md discovery Plugin distribution vs internal Claude Code configuration separation Repo-root skills/agents directories published via plugin.json; .claude/ directories for internal configuration only Repo-root directories (skills/, agents/, -migration.md) are plugin-distributed via .claude-plugin/plugin.json .claude/ subdirectories (.claude/skills/, .claude/agents/, .claude/rules/, .claude/hooks/) are internal only Plugin paths are relative to repo root and start with ./ .claude/ directories never referenced in plugin.json The Oxygen repo maintains two separate skill/agent directory trees with distinct purposes. Repo-root directories (skills/, agents/) are published for external users via the plugin manifest (.claude-plugin/plugin.json) and can be consumed by external Claude users. Internal .claude/ directories contain workflow skills, agent instructions, behavioral rules, and git hooks used only within the repo's Claude Code configuration. This separation allows the project to ship redistributable automation while maintaining internal development workflows. why-it-exists pattern docs/repo-structure.md Turn 4 — User Read 2026-05-20T10:09:28.248Z /Users/USER/workspace/doctolib/oxygen "{\"file_path\":\"/Users/USER/workspace/doctolib/oxygen/docs/component-patterns.md\"}" "{\"type\":\"text\",\"file\":{\"filePath\":\"/Users/USER/workspace/doctolib/oxygen/docs/component-patterns.md\",\"content\":\"# Component Patterns & Conventions\\n\\n> Severity annotations — Each section is tagged . These levels are used by the code-quality-reviewer agent to weight findings.\\n\\n## Per-Component Folder Structure \\n\\n/\\n\\n\\nComponentName/\\n├── Component.tsx # Main component (exported)\\n├── Component.module.css # Styles (CSS Module)\\n├── Component.stories.tsx # Storybook stories\\n├── Component.guidelines.mdx # Component guides on what can or cannot be done with the component\\n├── Component.interactions.stories.tsx # Interaction test stories\\n├── Component.a11y.interactions.stories.tsx # Accessibility test stories\\n├── Component.test.tsx # Unit tests (Vitest)\\n├── Component.test-helpers.ts # Testing utilities for consumers\\n├── Component.figma.tsx # Figma Code Connect mapping\\n├── Component.migration.ts # Codemod migration logic\\n├── v2/ # New component version, the current component is becoming legacy and replaced by this new one (optional)\\n└── private/ # Internal-only sub-components\\n \\n\\n## File Naming \\n\\n- Components: PascalCase (Card.tsx, InputText.tsx)\\n- Styles: Component.module.css — legacy files use .scss or .module.scss, do not create new ones\\n- Tests: Component.test.tsx\\n- Stories: Component.stories.tsx\\n- Interactions: Component.interactions.stories.tsx\\n- Accessibility: Component.a11y.interactions.stories.tsx\\n- Test helpers: Component.test-helpers.ts\\n- Figma: Component.figma.tsx\\n- Internal: in a private/ folder\\n- Legacy: The _ prefix on files/functions (e.g. _mapColumns.tsx, _types.ts) is a legacy convention — do not use it for new code. Use the private/ folder instead with regular names (e.g. private/mapColumns.tsx)\\n\\n## Component Implementation Pattern \\n\\n\\nexport function Component({prop1, prop2}: Props) {\\n return (\\n \\n {children}\\n \\n )\\n}\\n \\n\\nLet typescript infer as much as possible don't over type especially when using generics:\\n\\n\\n// DON'T\\nreturn ( data={data} />)\\n// IF THIS WORKS\\nreturn ()\\n \\n\\n## Common Props Pattern \\n\\n- Boolean properties should start with a state verb such as is or has\\n- Boolean properties should default to false for a better developer experience (opt-in rather than opt-out)\\n- All optional properties should also accept undefined as value (to ease storybook usage)\\n- Try to make most of the properties optional\\n- Try to have a default value to each optional so that we don't need to deal with undefined also\\n- Don't add properties unless needed\\n- NEVER add className as a property (except for some private components)\\n\\n\\ntype Props = {\\n id?: string | undefined\\n disabled?: boolean | undefined\\n required?: boolean | undefined\\n onChange?: EventHandler | undefined\\n}\\n \\n\\n## Lifecycle Stages (story tags) \\n\\n- st …(truncated, 72258 more chars) Turn 4 — Assistant discovery Component folder structure with colocated tests, stories, and Figma mapping Standard per-component layout with source, styles, stories, interactions, a11y tests, helpers, and Figma Code Connect files Component folder structure: Component.tsx, Component.module.css, Component.stories.tsx, Component.interactions.stories.tsx, Component.a11y.interactions.stories.tsx, Component.test.tsx, Component.test-helpers.ts, Component.figma.tsx, Component.migration.ts (optional), v2/ and private/ subdirectories File naming: PascalCase components, CSS Modules (.module.css for new files, legacy .scss/.module.scss forbidden), Tests (.test.tsx), Stories (.stories.tsx), Interactions (.interactions.stories.tsx), A11y (.a11y.interactions.stories.tsx) No barrel index.ts in component folders; components imported directly from file; exports defined in package.json subpaths Legacy _prefix convention replaced with private/ folder for internal sub-components Each Oxygen component follows a standard colocated file structure. Main implementation lives in Component.tsx with TypeScript props interface. Styles use CSS Modules (all new components); CSS tokens are split into 3 tiers (component-scoped, semantic, primitive). Storybook stories document usage with Overview pattern + named stories using .map() for variant matrices. Interaction tests verify user behavior; A11y tests verify accessibility contracts. Test helpers provide semantic query functions (buildRoleQueries, buildDSComponentQueries) for consumer tests. Figma Code Connect (.figma.tsx) maps Figma properties to React props. Migration logic in optional .migration.ts. Optional v2/ subdirectory houses next-generation versions. The structure emphasizes colocation of related files and avoids barrel exports for cleaner tree-shaking. pattern how-it-works docs/component-patterns.md discovery Component lifecycle progression: Draft → Alpha → Beta → Stable with promotion checklists Four maturity stages with defined requirements and Storybook story tags/checklists tracking readiness 4 stages: Draft (rough ideas, no code), Alpha (WIP/POC, breaking changes expected), Beta (fire-tested, limited access), Stable (mature, recommended) Alpha → Beta requires: hasStorybook, hasTestHelpers, isTested, hasDoc Beta → Stable requires: isFullyTested (80%+ coverage), hasFullDoc, hasDetailedStories, isBetaProgramEnded, hasNoBug, isExported Story organization: Alpha in alpha/ subdirectory, Beta in beta/, Stable in domain folders visibility:private tag moves stories to Internals section (alpha components, internal sub-components) Checklist imports: AlphaToBetaChecklist → ALPHA_CHECK, BetaToStableChecklist → BETA_CHECK Oxygen components progress through four maturity stages. Draft is pre-implementation. Alpha is experimental with breaking changes likely. Beta is nearly production-ready, has test helpers and documentation, limited access during beta program. Stable is mature with 80%+ test coverage, complete documentation, and public API. Each stage transition has specific requirements checked via Storybook story tags and stageChecklist parameters. Stories organized by stage in the filesystem. The private tag hides alpha and internal components from main Storybook navigation, revealing them only to contributors. This lifecycle system ensures quality and communicates expectations to consumers. pattern why-it-exists docs/component-lifecycle.md discovery Code style enforces semantic types, JSDoc discipline, and null avoidance Props naming conventions, type restrictions, JSDoc rules, styling source-of-truth, and null replaced with undefined Boolean props prefix: is, has, should (default false, never true) Event props: on, render props: render, main content: children Optional props must accept undefined; booleans must default to false Closed API rule: use specific union types (e.g., 'small' | 'medium' | 'large'), never generic string types JSDoc required for: public components/hooks, non-obvious type properties, Storybook stories. Self-explanatory code gets no JSDoc. Styling: Figma is source of truth; use EXACT tokens from Figma; never approximate or invent tokens No null in application code; use undefined instead. Exception: external API boundaries (React, Vite, DOM APIs) Icon imports must be direct component import (CheckSolidIcon), never deprecated Icon name='' API Prefer existing Oxygen components over raw HTML: Button vs <button>, Link vs <a>, form components vs <input> Oxygen enforces strict code style rules to maintain consistency and prevent subtle bugs. Props follow semantic naming (is/has/should for booleans, on for events). All optional props must explicitly accept undefined and have default values to avoid undefined-value friction. Types are restricted to specific union types rather than generic strings, enabling compile-time validation and self-documenting APIs. JSDoc is required but must earn its place—only properties that code alone doesn't make obvious. Styling is pegged to Figma tokens; developers apply the exact tokens from Figma rather than approximating values. Null is banned in favor of undefined, simplifying optional handling. Icon and component imports must use direct imports to enable tree-shaking. The style enforces composition over primitives and discourages raw HTML when Oxygen components exist. why-it-exists pattern gotcha docs/code-style.md discovery Token system with 3-tier hierarchy (component, semantic, primitive) Component-scoped, purpose-driven semantic, and raw primitive tokens; internal vs external consumer usage rules differ Internal contributors search: component → semantic → primitive (fail-and-fallback order) External consumers search: semantic → primitive (component tokens never external) Token naming: --oxygen-{category}-{tier}-{name} (e.g., --oxygen-color-semantic-brand-prominent-base) Component-scoped custom properties prefix: --oxygen-PRIVATE- (legacy: --oxygen-LOCAL-) Font tokens use all-in-one text styles, never split font properties Never use raw CSS values when token exists; flag missing tokens No unit-less px; use rem (base: 10px = 1rem) Source: packages/tokens/src/tokens.css contains all tokens; verify existence by grep before use Oxygen tokens are organized in a three-tier hierarchy. Component-tier tokens are internal scoped to a component (e.g., form input background). Semantic tokens serve a purpose across components (e.g., brand-prominent). Primitive tokens are raw values (e.g., blue-500). Internal contributors must search highest tier fi …(truncated, 9857 more chars) Turn 5 — User Read 2026-05-20T10:09:47.836Z /Users/USER/workspace/doctolib/oxygen "{\"file_path\":\"/Users/USER/workspace/doctolib/oxygen/docs/component-index-b2b.md\"}" "{\"type\":\"text\",\"file\":{\"filePath\":\"/Users/USER/workspace/doctolib/oxygen/docs/component-index-b2b.md\",\"content\":\"# Component Index — B2B\\n\\nPackage: @doctolib/design-system-b2b\\n\\n> Auto-generated from package.json exports. v1 components are omitted when a v2 exists.\\n\\nImport pattern: import { ComponentName } from '@doctolib/design-system-b2b/ComponentName'\\n\\nComponents marked with → subpath have a non-default import subpath. Source paths are relative to packages/core/src/ unless noted.\\n\\n### File roles\\n\\n- Source (.tsx) — Component API (props, types) and main documentation (JSDoc)\\n- Stories (.stories.tsx) — Usage examples and complementary documentation\\n- Figma (.figma.tsx) — Figma Code Connect mapping and key differences between code and design\\n\\n## actions\\n\\n| Component | Import Subpath | Source | Stories | Figma |\\n| ------------------- | ------------------- | --------------------------------------------------- | ----------------------------------------------------------- | ------------------------------------------ |\\n| Button | Button/v2 | actions/Button/v2/Button.tsx | actions/Button/v2/Button.stories.tsx | actions/Button/v2/Button.figma.tsx |\\n| ButtonFloating | ButtonFloating | actions/ButtonFloating/ButtonFloating.tsx | actions/ButtonFloating/ButtonFloating.stories.tsx | — |\\n| ButtonWithLinkStyle | ButtonWithLinkStyle | actions/ButtonWithLinkStyle/ButtonWithLinkStyle.tsx | actions/ButtonWithLinkStyle/ButtonWithLinkStyle.stories.tsx | — |\\n| Dropdown | Dropdown | actions/Dropdown/Dropdown.tsx | actions/Dropdown/Dropdown.stories.tsx | — |\\n| DropdownTrigger | DropdownTrigger | actions/Dropdown/DropdownTrigger.tsx | actions/Dropdown/DropdownTrigger.stories.tsx | — |\\n| Filters | Filters | actions/Filters/Filters.tsx | actions/Filters/Filters.stories.tsx | — |\\n| IconButton | IconButton/v2 | actions/IconButton/v2/IconButton.tsx | actions/IconButton/v2/IconButton.stories.tsx | actions/IconButton/v2/IconButton.figma.tsx |\\n\\n## collection\\n\\n| Component | Import Subpath | Source | Stories | Figma |\\n| ---------------------- | ---------------------- | -------------------------------------------- | --------------------------------------------- | ----- |\\n| BulkSelect | BulkSelect | dataDisplay/Table/Utils/BulkSelect.ts | — | — |\\n| List | List | collection/List/List.tsx | collection/List/List.stories.tsx | — |\\n| ListItem | ListItem | collection/List/ListItem/ListItem.tsx | collection/List/ListItem/ListItem.stories.tsx | — |\\n| Table | Table | dataDisplay/Table/Table.tsx | dataDisplay/Table/Table.stories.tsx …(truncated, 219535 more chars) Turn 5 — Assistant discovery Button v2 uses discriminated union for onClick prop (required vs optional) RegularButtonProps requires onClick; SubmitButtonProps makes it optional; 'handledByParent' literal for trigger patterns Button.tsx v2 exports discriminated union CommonProps = SubmitButtonProps | RegularButtonProps SubmitButtonProps (type='submit'): onClick optional; form submission handled by form's onSubmit RegularButtonProps (type='button' or default): onClick required; must pass 'handledByParent' string literal when inside trigger (PopoverTrigger, DropdownTrigger) 'handledByParent' literal prevents accidental "empty" buttons that do nothing onClick handler blocks event propagation when isLoading=true Uses useMousePosition, useDropdownPopover, usePopoverTrigger, useIsOverlay hooks Renders chevron icon when inside DropdownTriggerContext or PopoverTriggerContext Button v2 enforces intentional click handler declaration via a discriminated union pattern. Submit buttons allow onClick to be optional since form submission is the responsibility of the form element. Regular buttons require an explicit onClick handler to prevent silent failures; developers pass the literal 'handledByParent' when the button is used inside a Radix UI trigger component (PopoverTrigger, DropdownTrigger) that injects its own click handler via the asChild pattern. This balances type safety with real-world composition patterns. The button also integrates with dropdown/popover trigger contexts to automatically render a chevron icon that animates based on the parent's open state. pattern how-it-works gotcha packages/core/src/actions/Button/v2/Button.tsx discovery Form components use controlled/uncontrolled hybrid pattern with character counting InputText tracks charCount from value prop (controlled) or uncontrolledCharCount state (uncontrolled); forces error state when exceeding maxlength InputText manages charCount: if value prop exists, derives charCount from value.length; otherwise tracks via uncontrolledCharCount state Avoids React 19 "Maximum update depth" errors by deriving charCount from value prop for controlled inputs maxlength defaults to Infinity; when charCount > maxlength, state is forced to 'error' ariaDescribedBy built via computeAriaDescribedBy (covers hint, message, maxlength counter) RawInputText supports both controlled and uncontrolled modes independently Select mirrors InputText structure but for <select> elements InputText and Select form components implement a hybrid pattern that supports both controlled (value prop) and uncontrolled (internal state) usage. For controlled inputs, charCount is derived from the value prop to avoid state management conflicts in React 19. For uncontrolled inputs, charCount is tracked via local state updated in event handlers. The maxlength constraint automatically sets the field to error state when exceeded, providing immediate validation feedback. The aria-describedby attribute is computed to include hint, message, and character counter messages, providing complete context to assistive technologies. how-it-works pattern packages/core/src/forms/InputText/InputText.tsx packages/core/src/forms/InputText/RawInputText.tsx packages/core/src/forms/Select/Select.tsx discovery Checkbox v2 uses React Aria hooks with custom styled native input useFocusRing for keyboard-only focus indicator; useVisuallyHidden to hide native input; controlled boolean value (not string) value is boolean (defaults false), not string like HTML checkboxes onChange receives boolean directly, not ChangeEvent Uses React Aria's useFocusRing to show focus ring only on keyboard navigation, not mouse clicks Native <input type="checkbox"> hidden via useVisuallyHidden; custom styled <span> renders the visible checkbox Syncs controlled value prop with internal internalChecked state via render-time comparison (previousValue !== value) Supports optional description (string | [string] | [string, string]) and information labels Group-aware: accepts orientation, variant, size, wrap from CheckboxGroup context Checkbox v2 leverages React Aria hooks to provide accessible keyboard and mouse interaction while maintaining full styling control. The native HTML checkbox input is hidden from view but remains in the DOM for form submission and keyboard operability. A custom styled button element provides the visual checkbox. useFocusRing ensures the focus indicator appears only during keyboard navigation, preventing visual noise from mouse interactions. The component uses boolean values instead of strings, making TypeScript inference cleaner and intent clearer. Controlled updates via prop comparison prevent unnecessary re-renders while keeping internal state in sync with the value prop. how-it-works pattern packages/core/src/forms/Checkbox/v2/Checkbox.tsx discovery ReactHookFormField wrapper composes RHF Controller with Oxygen field components Generic controller that extracts e.target.value when event has target property; supports both event and direct-value onChange patterns ReactHookFormField is generic over TCompoProps (field component props), TFieldValues (RHF form values), TName (field path) FieldComponentProps contract requires onBlur?, onChange?, value? Composes user's onBlur/onChange with RHF's: calls rhfOnBlur() + userOnBlur?.(), extracts e.target.value when event has target (InputText) else passes value directly (Checkbox boolean) Passes both isRequired and required props to component for compatibility Accepts RHF Controller props: name, rules, shouldUnregister, defaultValue, control Avoids need for developers to manually write Controller + component boilerplate ReactHookFormField provides a generic wrapper around RHF's Controller to reduce boilerplate when integrating Oxygen components with React Hook Form. It bridges the gap between RHF's event-based onChange (which passes events) and value-based components (which pass values directly, like Checkbox). The wrapper intelligently detects whether the onChange argument has a target property (from a synthetic event) and extracts the value, otherwise passes the value as-is. This allows the same wrapper to work with both InputText (event-based) and Checkbox (boolean-based) without developers needing to write custom Controller render functions. pattern how-it-works packages/core/src/forms/ReactHookFormField.tsx Agent 2026-05-20T10:10:54.643Z /Users/USER/workspace/doctolib/oxygen "{\"description\":\"Read core package source files - part 2 (layout, common)\",\"prompt\":\"Please read the following source files from the Oxygen design system and return their full contents. Read each file completely using offset/limit if needed for large files.\\n\\nFiles to read:\\n1. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/HStack.tsx\\n2. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/VStack.tsx\\n3. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/Columns/Columns.tsx\\n4. /Users/USER/workspace/doctolib/oxygen/packages/core/src/common/DataAttribute.ts\\n5. /Users/USER/workspace/doctolib/oxygen/packages/core/src/common/TailwindStyle.ts\\n6. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/bleed/Bleed.tsx\\n\\nReturn the full content of each file with file path as header.\"}" "{\"status\":\"completed\",\"prompt\":\"Please read the following source files from the Oxygen design system and return their full contents. Read each file completely using offset/limit if needed for large files.\\n\\nFiles to read:\\n1. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/HStack.tsx\\n2. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/VStack.tsx\\n3. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/Columns/Columns.tsx\\n4. /Users/USER/workspace/doctolib/oxygen/packages/core/src/common/DataAttribute.ts\\n5. /Users/USER/workspace/doctolib/oxygen/packages/core/src/common/TailwindStyle.ts\\n6. /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/bleed/Bleed.tsx\\n\\nReturn the full content of each file with file path as header.\",\"agentId\":\"aef68713bbe6ce2c2\",\"agentType\":\"general-purpose\",\"content\":[{\"type\":\"text\",\"text\":\"Here are the full contents of all 6 files:\\n\\n---\\n\\n### /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/HStack.tsx\\n\\n\\nimport { type CommonProps, Flex, type SpecificProps } from './private/Flex'\\n\\ntype Props = Omit &\\n Pick & {\\n /\\n Vertical alignment of items\\n /\\n align?: CommonProps['align']\\n /\\n Horizontal distribution of items\\n /\\n justify?: CommonProps['justify']\\n /\\n Allow wrapping to next line when items don't fit\\n /\\n hasWrap?: SpecificProps['hasWrap']\\n }\\n\\n/\\n Aligns horizontally its children so that they'll fit in a row.\\n Items may be separated with a specific gap and / or aligned and justified in many ways\\n \\n This component is a simplified wrapper around Flexbox with flex-direction: row.\\n \\n This component is perfect for arranging items in a row like tags, buttons, card titles, and inline elements.\\n \\n /\\nexport function HStack({ align, justify, hasWrap = false, ...props }: Props) {\\n return (\\n \\n )\\n}\\n \\n\\n---\\n\\n### /Users/USER/workspace/doctolib/oxygen/packages/core/src/layout/VStack.tsx\\n\\n\\nimport { type CommonProps, Flex, type SpecificProps } from './private/Flex'\\nimport type { GapValue } from './private/tokensHelper'\\n\\n// VStack has slightly different align prop (no stretch)\\ntype Alignment = Exclude\\n\\ntype Props = Omit &\\n Pick & {\\n /\\n Space separating each child item\\n /\\n gap?: GapValue | undefined // Component do not wrap s …(truncated, 188183 more chars) Turn 7 — User This session is being continued from a previous conversation that ran out of context. The summary below covers the earlier portion of the conversation. Summary: 1. Primary Request and Intent: The user requested claude-mem:learn-codebase to explore and document the Oxygen design system monorepo. The intent was to create searchable memory observations that capture the codebase's architecture, patterns, conventions, and key design decisions for future development sessions. This was NOT a code-writing or debugging task, but rather a comprehensive codebase learning and documentation exercise. 2. Key Technical Concepts: - Nx 19.7.3 monorepo with npm workspaces - 10 packages: core (@doctolib/design-system), b2b, b2c, icons, illustrative-icons, tokens, toast, codemods, storybook-config, storybook-hub - React 18/19 with TypeScript 5.5.4 - CSS Modules for styling with 3-tier (component, semantic, primitive) - Storybook 9.x for component documentation - Vitest for testing with React Testing Library - React Aria for accessibility primitives - Radix UI for headless components - Figma Code Connect for design-to-code mapping - Component lifecycle maturity stages (Draft, Alpha, Beta, Stable) - WCAG 2.2 Level AA accessibility compliance - Discriminated unions for type-safe prop patterns - Controlled/uncontrolled component patterns - Plugin distribution vs internal configuration separation (.claude/ directories) 3. Files and Code Sections: Documentation Files Read: - /docs/index.md - Documentation index with task-based quick lookup tables - /docs/repo-structure.md - Monorepo structure, 10 packages, key dependencies (React Aria, Radix UI, CSS Modules) - /docs/component-patterns.md - Per-component folder structure (Component.tsx, .module.css, .stories.tsx, .test.tsx, .figma.tsx), file naming conventions, component implementation pattern with forwardRef - /docs/component-lifecycle.md - 4-stage progression (Draft→Alpha→Beta→Stable) with specific promotion requirements and Storybook tags - /docs/code-style.md - Props naming (is, has, should, on, render), optional props rules, JSDoc discipline, styling with , icon import patterns, null avoidance - /docs/token-reference.md - 3-tier hierarchy usage rules (component→semantic→primitive for internal; semantic→primitive for external consumers) - /docs/storybook-patterns.md - Default export with satisfies keyword, Overview story pattern, .map() for variant matrices, file scope limits - /docs/testing-patterns.md - Test types (feature, a11y, unit), test-helper queries (buildRoleQueries, buildDSComponentQueries), deduplication rules - /docs/a11y-patterns.md - WCAG 2.2 AA compliance, ARIA principles, prohibited patterns (outline:none, explicit tabindex), keyboard navigation requirements - /docs/component-index-core.md - Core package catalog: 300+ components across 8 categories (actions, collection, dataDisplay, feedbacks, forms, layout, navigation, overlays) - /docs/component-index-b2b.md - B2B variant components (adds DataGrid, Filters) - /docs/component-index-b2c.md - B2C variant components Source Code Files Read (40+ files demonstrating patterns): Actions Category: - Button/v2/Button.tsx - Discriminated union for onClick prop (required vs optional based on type='submit'), loading state with aria-live announcer, chevron icon when in dropdown/popover context, handles 'handledByParent' literal for trigger patterns - IconButton/v2/IconButton.tsx - Uses useMousePosition and React Aria hooks, shares Button styling, wraps in Tooltip, supports both deprecated icon name string and direct IconComponent - Switch.tsx - Partial reset pattern for controlled updates (preserves CSS transitions), aria-pressed button + visually hidden checkbox - Dropdown.tsx - Compound component (Item, Checkbox, Button, Link, Icon, etc), uses non-interactive span wrapper for Checkbox to avoi …(truncated, 8358 more chars) Turn 7 — Assistant I'm ready to continue. Let me check the current task status. Tools used: - TaskList (inputs: ) Tool results: → result (ok): No tasks found I'm continuing from the comprehensive codebase learning session. The background agent tasks have completed reads of additional source files. I'll now document these patterns and findings through memory observations to capture the architectural insights. Advanced Form Patterns & Accessibility RadioGroup demonstrates sophisticated field composition: - Fieldset-based with computed aria-labelledby across label, message, and hint - Auto-focus pattern via _shouldAutoFocus prop + computed autoFocusIndex - Controlled/uncontrolled state via inputValue + previousValue sync pattern - Discriminated union for variant/orientation/size combinations (default|stacked|card × horizontal|vertical × medium|large) - LabelWrapper helper for conditional ScreenReaderOnly wrapping ComboBox shows React Aria patterns at scale: - Discriminated union for uiStyle: default has hint/contextualPopover; floating doesn't - ComboBoxValue type: { type: 'option'|'custom', value } | undefined for distinction - Mobile detection via useMediaQuery switches to MobileComboBox - forbiddenContent validation checks for interactive children (buttons, inputs) - Option flattening utility (flatMapOptions, isOptionGroup) for hierarchy handling InputDate/Textarea mirror InputText structure: - Floating label via useFloatingLabelField hook with isEmpty tracking - Textarea: auto-resize via hasAutoResize check + charCount validation (forced error state if exceeds maxlength) - Both use discriminated union for uiStyle (default with hint vs floating without contextualPopover) Toggle: Controlled/uncontrolled via checked prop, supports label positioning (left/right), color variants (blue|green), and platform-aware rendering via usePlatform. Slider (@beta): React Aria slider with value hints array (2-3 elements for min/mid/max annotations), uses previousValueProp sync pattern during controlled updates, SliderOutput for display. Navigation & Overlay Component Strategies Pagination: - Controlled currentPage with nbDoublePagesDisplayed for ellipsis math - ButtonBase approach with PaginationButton/PageNumberButton/Ellipsis subcomponents - Optional isLoading skeleton state, showInfos toggle, paginationDisabled gate SidebarMenu: - Compound component with SidebarMenu + SidebarMenuItem - React Router Link integration (to, href, target support) - Optional icon + mandatory tooltip with placement control - TappableWithForwardedRef for touch handling - titleUiStyle prop for typography override Drawer (MUI SwipeableDrawer-based): - Position variants, size prop, blocking disables swipe-down + escape - DrawerBody/DrawerFooter subcomponents, DrawerListAction/DrawerBodyIconActionGroup for specialized content - Responsive dvh units for mobile height calculation ContextualPopover: - Platform-aware: Popover on desktop, Modal on mobile - Variant discrimination (help|info) with conditional icon (regular/circle-question vs regular/square-info) - Trigger via internal IconButton AlphaSidePanel (MUI Modal-based): - Size variants: small|medium|large - Footer optional via SidePanelFooter subcomponent - Auto-enriches AlphaSidePanelHeader children with onClose, size, and titleId props Backdrop: - CSSTransition animation wrapper, muted variant with optional SpinnerLoader (500ms delay) - uiStyle discrimination (dark|light) Core Flex/Layout & Testing Utilities Flex (private primitive): - Emotion's ClassNames for dynamic CSS + semantic element polymorphism - ALIGN_ITEMS: baseline|normal|start|center|end|stretch - JUSTIFY_CONTENT: normal|start|center|end|space-between|space-around|space-evenly - Direction + hasWrap + min/max width/height constraints - CSS custom property --oxygen-PRIVATE-columns-gap-x for computed column gap - Underlying both VStack and HStack useAriaLiveAnnouncer: Thin @react-aria/live-announcer wrapper returning { announceInLiveRegion(assertiveness, message) } getIconByNameOrComponent: Polymorphic helper accepting IconName string or DesignSystemIconComponent, filters undefined props for custom component rendering Testing Utilities: - buildRoleQueries(componentName, role) returns get/query/find getters with role-based matching - buildDSComponentQueries(componentName, isMatching?) uses data-design-system-component attribute selector - nameQueries(componentName, queries) renames generic locators to component-specific (e.g., getButton → getCard) - refineQueries(queries, refiner) wraps existing locators with post-filter predicates - Optional container parameter overloading for scoped queries - hasRole(role, element) / isDSComponent(componentName, element) predicates Data Display Complexity: Accordion, Pill, Card, Avatar Patterns Accordion: - Context-based state management via AccordionContext (isAccordionItemOpen, open/closeAccordionItem callbacks) - Three exports: Accordion (provider), AccordionItem (context-connected), StatelessAccordionItem (fully controlled) - allowMultipleExpand toggles single vs multi-select mode via setOpenItems strategy - Discriminated union: titleUiStyle 'Body/S/Bold' renders , others render - AccordionTitleColor map converts deprecated text color tokens to heading-safe ones (some map to undefined) - useId for button/content aria-controls/aria-labelledby linking - arrowPosition prop (left|right) controls chevron placement Pill: - Complex discriminated union for image vs illustration with child content validation - validatePillUsage in dev mode checks for forbidden interactive content (buttons, inputs) - PillList, PillLabel, Pill subcomponents - Size variants: xsmall|small|medium - Color variants: 9 options (error/neutral/primary/purple/success/teal/warning/white/yellow with -020 suffix) Card v2: - Three variants: CardElevated, CardOutlined, CardSolid (thin wrappers around private Card) - CommonProps shared type definition in private/Card.tsx - className + data-design-system-component passthrough pattern AvatarGroup: - DEFAULT_MAX_AVATARS = 4, clones Avatar children with bordered=true - renderRemaining helper for "+N" overflow indicator - Orientation: horizontal|vertical Table, Pill Content Validation & Avatar Color Computation Table: - Native props spread via ComponentPropsWithoutRef<'table'> - fixedLayout boolean, size variants (xsmall|small|medium), className override - loading prop switches to TableSkeletonLoader rendering mode - skeletonLoaderProps passthrough for loader customization - Simple wrapper component with semantic HTML preservation AvatarGroup Detail: - Uses Avatar's color computation (based on id/text/icon hash, 16 color options) - bordered=true clone forces bordered rendering in group context - Supports rightIcon on avatars - Status indicators inherited from Avatar Pill Detail: - Image variant discriminated via img prop (ReactNode image + link support) - Illustration variant via illustration prop (ReactNode) - Child content (PillLabel) must not contain interactive elements (validated via containsForbiddenInteractive) - deprecated-pill-interface escape hatch for legacy child-based API - Badge integration for decorative counts - SpinnerLoader for loading state inside Pill The comprehensive exploration of the Oxygen codebase is now complete with detailed documentation of all major architectural patterns, component structures, accessibility implementations, and development conventions captured for future reference. Turn 8 — User Agent 2026-05-20T10:13:04.541Z /Users/USER/workspace/doctolib/oxygen "{\"description\":\"Read feedbacks, indicator, and other utility components\",\"prompt\":\"Please read the following source files from the Oxygen design system and return their full contents. Read each file completely using offset/limit if needed for large files.\\n\\nFiles to read:\\n1. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/EmptyState/EmptyState.tsx\\n2. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/SpinnerLoader/SpinnerLoader.tsx\\n3. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/progressBar/ProgressBar.tsx\\n4. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertBanner.tsx\\n5. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertCard.tsx\\n6. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertHint.tsx\\n7. /Users/USER/workspace/doctolib/oxygen/packages/core/src/navigation/SegmentedControl/SegmentedControl.tsx\\n8. /Users/USER/workspace/doctolib/oxygen/packages/core/src/navigation/Stepper/Stepper.tsx\\n\\nReturn the full content of each file with file path as header.\"}" "{\"status\":\"completed\",\"prompt\":\"Please read the following source files from the Oxygen design system and return their full contents. Read each file completely using offset/limit if needed for large files.\\n\\nFiles to read:\\n1. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/EmptyState/EmptyState.tsx\\n2. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/SpinnerLoader/SpinnerLoader.tsx\\n3. /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/progressBar/ProgressBar.tsx\\n4. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertBanner.tsx\\n5. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertCard.tsx\\n6. /Users/USER/workspace/doctolib/oxygen/packages/core/src/indicator/Alert/AlertHint.tsx\\n7. /Users/USER/workspace/doctolib/oxygen/packages/core/src/navigation/SegmentedControl/SegmentedControl.tsx\\n8. /Users/USER/workspace/doctolib/oxygen/packages/core/src/navigation/Stepper/Stepper.tsx\\n\\nReturn the full content of each file with file path as header.\",\"agentId\":\"a79ce905405910fc0\",\"agentType\":\"general-purpose\",\"content\":[{\"type\":\"text\",\"text\":\"Here are the full contents of all 8 files:\\n\\n---\\n\\n## /Users/USER/workspace/doctolib/oxygen/packages/core/src/feedbacks/EmptyState/EmptyState.tsx\\n\\n tsx\\nimport './EmptyState.scss'\\n\\nimport classNames from 'classnames'\\nimport type { ComponentProps, ReactNode } from 'react'\\n\\nimport { Button, type ButtonProps } from '../../actions/Button/Button'\\nimport { Heading } from '../../dataDisplay/text/Heading'\\nimport { IllustrativeIcon, type IllustrativeIconProps } from '../../dataDisplay/IllustrativeIcon/IllustrativeIcon'\\nimport { Image } from '../../dataDisplay/Image/Image'\\nimport { Paragraph } from '../../dataDisplay/text/Paragraph'\\nimport { SpinnerLoader } from '../SpinnerLoader/SpinnerLoader'\\nimport { useTranslations } from '../../i18n/useTranslations'\\n\\nexport type ActionProps = {\\n text: string\\n walkmeid?: string | undefined\\n} & ButtonProps\\n\\ntype EmptyStateProps = {\\n className?: string | undefined\\n title?: string | undefined\\n titleLevel?: ComponentProps['level'] | undefined\\n /\\n A simple text explaining the purpose of this view.\\n Refer to the design guidelines for more details.\\n /\\n children?: ReactNode\\n loading?: boolean | undefined\\n primaryAction?: ActionProps | undefined\\n secondaryAction?: ActionProps | undefined\\n}\\n\\ntype EmptyStateIm …(truncated, 22899 more chars) Turn 8 — Assistant Feedback Component Patterns: EmptyState, SpinnerLoader, ProgressBar EmptyState: - Discriminated union via image vs illustration props (mutually exclusive using never type) - Image variant: accepts image string, optional imageAlt, size (32|64|80|120|160|240) - Illustration variant: accepts IllustrativeIconProps object, no imageAlt or size - Optional title with configurable titleLevel (h1-h6), optional children content - primaryAction/secondaryAction of type { text, walkmeid?, ...ButtonProps } - loading boolean triggers rendering alongside SpinnerLoader + "processing..." message - Secondary action defaults to uiStyle='small-primary' - Center-aligned flex column layout wrapping content SpinnerLoader: - SVG-based circular progress indicator with animated stroke - SPINNER_SIZES: { xsmall: 8, small: 12, medium: 16, large: 24 } - Color variants: white|blue|neutral|danger mapped via CSS classes dl-path-${color} - Size-dependent stroke classes: dl-path-${size} - Rendered as role='progressbar' with aria-valuemin/valuemax (0/100) - Background circle + animated foreground circle composition - Default size='large', color='blue' ProgressBar: - Exports utility function toPercent(current, total) with comprehensive guards (negative, NaN, Infinity, zero-division) - Label display: configurable via hideLabel prop - Value display: optional via showValue, format toggleable (percentage vs fraction) via isFormatPercentage - aria-valuenow/valuemin/valuemax for accessibility - Optional hasRadius border-radius styling - ScreenReaderOnly announcement via Translate component for sr-only context - Fill div width calculated as ${percentageValue}% Alert Component Architecture: Banner, Card, Hint Variants All three (AlertBanner, AlertCard, AlertHint) are thin wrappers over private _Alert component with discriminated variant behavior: AlertBanner: - variant='banner' (width-filling) - align defaults to 'center' (can be overridden) - size defaults to 'medium', excludes 'xsmall' - Omits isFittingContent, variant, size from public props AlertCard: - variant='card' (more prominent, self-contained) - No align prop (card-specific centering) - size defaults to 'medium', excludes 'xsmall' - Omits align, variant, size from public props AlertHint: - variant='hint' (no background, stackable) - onClose always undefined (non-closeable) - size defaults to 'small', excludes 'medium' - Omits isFittingContent, align, variant, size, onClose from public props Pattern: Each variant enforces specific size ranges (AlertBanner/Card: medium-large; AlertHint: small/xsmall), and feature availability (only Banner+Card support close, only Card removes align control). Navigation Controls: SegmentedControl Generic Implementation & Stepper States SegmentedControl: - Generic type parameter ComponentProps extends RefAttributes for router-agnostic linking - Discriminated union: ButtonProps (component?: 'button', options: Option[]) vs LinkProps (component: RouterLink, options: AnchorOption[]) - isButtonItem type guard differentiates render path - Internally controlled state via useState synced with external value via useEffect - useFocusVisible hook for keyboard-focus styling (isFocusVisible class toggle) - onChange callback fires on click, updates internal state, then conditional onChange call - Renders as