improvement(platform): drop lucide-react for the in-house icon set, flatten the type and border scales, and retire scheduled tasks and workflow references

.agents/skills/add-enrichment/SKILL.md

@@ -63,7 +63,7 @@ Why it matters: the cascade runner only bills (and only reads `output.cost.total
 Create `apps/sim/enrichments/{name}/{name}.ts` and a barrel `index.ts`. Mirror the existing entries (`work-email`, `phone-number`, `company-domain`, `company-info`).
 
 ```typescript
-import { SomeIcon } from 'lucide-react'
+import { SomeIcon } from '@sim/emcn/icons'
 import { filterUndefined } from '@sim/utils/object'
 import { normalizeDomain, splitName, str, toolProvider } from '@/enrichments/providers'
 import type { EnrichmentConfig } from '@/enrichments/types'
@@ -109,7 +109,7 @@ export { myEnrichment } from './my-enrichment'
 ```
 
 Rules:
-- Keep the file **client-safe**: import only `lucide-react`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
+- Keep the file **client-safe**: import only `@sim/emcn/icons`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
 - `buildParams` returns `null` when inputs are insufficient (provider skipped). `mapOutput` returns `null`/empty for a miss (falls through). Use `filterUndefined` when assembling optional tool params; coerce numbers explicitly (don't pass `''` to number outputs).
 - Output `id`s are the keys `mapOutput` returns; output `name`s are the default column names (the user can rename them in the config).
 

.agents/skills/emcn-design-review/SKILL.md

@@ -18,7 +18,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 
 ## Steps
 
-1. Read the emcn public barrel at `apps/sim/components/emcn/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `apps/sim/components/emcn/icons/index.ts`
+1. Read the emcn public barrel at `packages/emcn/src/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `packages/emcn/src/icons/index.ts`
 2. Read `apps/sim/app/_styles/globals.css` for CSS variable tokens
 3. Analyze the specified scope against every rule below
 4. If fix=true, apply the fixes. If fix=false, propose the fixes without applying.
@@ -28,7 +28,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 ## Imports
 
 - Import from `@/components/emcn` barrel, never subpaths
-- Icons from `@/components/emcn/icons` or `lucide-react`
+- Icons from `@sim/emcn/icons`
 - Use `cn` from `@/lib/core/utils/cn` for conditional classes
 
 ## Design Tokens
@@ -45,7 +45,7 @@ Use CSS variable pattern (`text-[var(--text-primary)]`), never Tailwind semantic
 
 ## Buttons
 
-Intent-to-variant mapping (read the actual `buttonVariants` in `apps/sim/components/emcn/components/button/button.tsx` for the full variant set — it exposes more than listed here):
+Intent-to-variant mapping (read the actual `buttonVariants` in `packages/emcn/src/components/button/button.tsx` for the full variant set — it exposes more than listed here):
 
 | Action | Variant |
 |--------|---------|

.claude/commands/add-enrichment.md

@@ -62,7 +62,7 @@ Why it matters: the cascade runner only bills (and only reads `output.cost.total
 Create `apps/sim/enrichments/{name}/{name}.ts` and a barrel `index.ts`. Mirror the existing entries (`work-email`, `phone-number`, `company-domain`, `company-info`).
 
 ```typescript
-import { SomeIcon } from 'lucide-react'
+import { SomeIcon } from '@sim/emcn/icons'
 import { filterUndefined } from '@sim/utils/object'
 import { normalizeDomain, splitName, str, toolProvider } from '@/enrichments/providers'
 import type { EnrichmentConfig } from '@/enrichments/types'
@@ -108,7 +108,7 @@ export { myEnrichment } from './my-enrichment'
 ```
 
 Rules:
-- Keep the file **client-safe**: import only `lucide-react`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
+- Keep the file **client-safe**: import only `@sim/emcn/icons`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
 - `buildParams` returns `null` when inputs are insufficient (provider skipped). `mapOutput` returns `null`/empty for a miss (falls through). Use `filterUndefined` when assembling optional tool params; coerce numbers explicitly (don't pass `''` to number outputs).
 - Output `id`s are the keys `mapOutput` returns; output `name`s are the default column names (the user can rename them in the config).
 

.claude/commands/emcn-design-review.md

@@ -17,7 +17,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 
 ## Steps
 
-1. Read the emcn public barrel at `apps/sim/components/emcn/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `apps/sim/components/emcn/icons/index.ts`
+1. Read the emcn public barrel at `packages/emcn/src/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `packages/emcn/src/icons/index.ts`
 2. Read `apps/sim/app/_styles/globals.css` for CSS variable tokens
 3. Analyze the specified scope against every rule below
 4. If fix=true, apply the fixes. If fix=false, propose the fixes without applying.
@@ -27,7 +27,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 ## Imports
 
 - Import from `@/components/emcn` barrel, never subpaths
-- Icons from `@/components/emcn/icons` or `lucide-react`
+- Icons from `@sim/emcn/icons`
 - Use `cn` from `@/lib/core/utils/cn` for conditional classes
 
 ## Design Tokens
@@ -44,7 +44,7 @@ Use CSS variable pattern (`text-[var(--text-primary)]`), never Tailwind semantic
 
 ## Buttons
 
-Intent-to-variant mapping (read the actual `buttonVariants` in `apps/sim/components/emcn/components/button/button.tsx` for the full variant set — it exposes more than listed here):
+Intent-to-variant mapping (read the actual `buttonVariants` in `packages/emcn/src/components/button/button.tsx` for the full variant set — it exposes more than listed here):
 
 | Action | Variant |
 |--------|---------|

.claude/rules/emcn-components.md

@@ -1,6 +1,6 @@
 ---
 paths:
-  - "apps/sim/components/emcn/**"
+  - "packages/emcn/**"
 ---
 
 # EMCN Components
@@ -20,7 +20,7 @@ The menu surface intentionally diverges from the pill: `dropdown-menu.tsx` items
 
 ## Component catalogue
 
-- **`Chip` / `ChipLink`** — the pill button (`<button>` / Next `<Link>`). Variants: `ghost`, `filled`, `primary`, `destructive`, `border-shadow`. `leftIcon`/`rightIcon`, `active`, `fullWidth`, `flush`.
+- **`Chip` / `ChipLink`** — the pill button (`<button>` / Next `<Link>`). Variants: `primary`, `destructive`, `border-shadow`, `border`; the bare chip is implicit (omit `variant`). `filled` is deliberately NOT a `Chip` variant — it is reserved for chip fields/triggers. For a selected/toggle chip use the `active` prop, never a variant. `leftIcon`/`rightIcon`, `active`, `fullWidth`. Chips carry **no outer margin** — space between them is the parent's `gap`. The old `mx-0.5` default and its `flush` opt-out are gone; do not reintroduce either, and never add a margin to a chip through `className`.
 - **`ChipInput`** — single-line text field. `icon`, `endAdornment`, `error`, `inputClassName` (inner `<input>`); `className` styles the chrome wrapper.
 - **`ChipCopyInput`** — the canonical view-only field: a read-only `ChipInput` at full opacity with a trailing copy-to-clipboard button. View-only is a display mode, not a disabled state — reach for it (or `ChipModalField type='copy'`) over a `disabled` (greyed) input for values the user cannot edit.
 - **`ChipTextarea`** — multi-line sibling. `error`, `resizable` (off by default), `viewOnly` (read-only at full opacity with the default cursor — the multi-line counterpart of `ChipCopyInput`).

.claude/rules/sim-styling.md

@@ -50,13 +50,29 @@ Custom font sizes (`apps/sim/tailwind.config.ts`): `text-micro`=10px, `text-xs`=
 
 Icons default `size-[14px]`. Equal h/w → `size-*` (`size-[14px]`, `size-4`), never `h-N w-N`.
 
+## Font Weight
+
+Three steps, Tailwind's stock scale, nothing else: **`font-normal` (400)**, **`font-medium` (500)**, **`font-semibold` (600)**. 400 is the document default, so body text, chip labels, sidebar items, and headings carry **no weight class at all** — they inherit. Reach for a class only to step *up* from body.
+
+Never write an arbitrary weight (`font-[380]`, `font-[430]`, `font-[450]`, …), and never set `fontWeight` in an inline `style`. There was previously a CSS-variable weight scale (`--font-weight-base/medium/semibold`, remapping `font-medium` to 440/480) plus seven ad-hoc values clustered between 380 and 500; it was deleted because nothing read as hierarchical. Off-scale values are only acceptable where the design system genuinely cannot reach — react-email templates and the static `apps/sim/emails/broadcasts/*.html`, which email clients render without CSS variables.
+
+Headings inherit their weight. Tailwind preflight resets `h1`–`h6` to `font-weight: inherit`, so an `<h1>` is 400 unless you say otherwise — that is the intended look, not a bug to patch.
+
 ## Color Tokens
 
-Value text `--text-body`; muted/placeholder/labels `--text-muted`; icons `--text-icon`; borders `--border-1` (fields) / `--border` (dividers); surfaces `--surface-5` (light) / `--surface-4` (dark); active row `--surface-active`; error `--text-error`. No focus rings on chip surfaces.
+Value text `--text-body`; muted/placeholder/labels `--text-muted`; icons `--text-icon`; neutral borders and dividers `--border` (`--border-1` and `--border-muted` are legacy aliases resolving to it; `--divider` is retired); surfaces `--surface-5` (light) / `--surface-4` (dark); active row `--surface-active`; error `--text-error`. No focus rings on chip surfaces.
+
+### Line weight
+
+Neutral border geometry comes from `--border-width`: `1px` by default, dropping to `0.5px` under `@media (min-resolution: 2dppx)` so hidpi displays get a true hairline. Tailwind's `border*` and `divide-*` utilities resolve through it, as do `h-px`/`w-px` — the `px` key is overridden on **`spacing`**, not on `width`/`height`, so a hairline and the `-right-px`/`inset-px` offsets that position it stay in agreement.
+
+**Tune line weight on `--border`, never on `--border-width`.** Browsers floor a border to whole device pixels, so on a 2dppx display every value in `(0, 1px)` collapses to the same single-pixel hairline and the next drawable step is a full `1px` — double. Width has exactly one usable position; perceived weight is a color property. Light mode gains weight by darkening `--border`, dark mode by lightening it.
+
+Draw a line with a real `border-*` utility. Never hand-roll one as `shadow-[inset_0_-1px_0_…]` — box-shadow has its own width and cannot follow the token, so such a line silently renders at double weight against every neighbor. Use an explicit numeric width (or a `ring`/`outline`) only when the line is intentionally emphasized, e.g. focus and selection affordances.
 
 ## Chip Components (consumer usage)
 
-`ChipInput`, `ChipTextarea`, `ChipModal*` own their full chrome. Consumers describe intent through PROPS; they never re-style the chrome. The canonical chrome lives in `apps/sim/components/emcn/components/chip/chip-chrome.ts` (all tokens are re-exported from the `@sim/emcn` barrel — no subpath import needed) — never hand-roll `rounded-lg`/`border`/`bg-[var(--surface-5)]`/`h-[30px]`/`px-2`/`text-sm`/focus rings.
+`ChipInput`, `ChipTextarea`, `ChipModal*` own their full chrome. Consumers describe intent through PROPS; they never re-style the chrome. The canonical chrome lives in `packages/emcn/src/components/chip/chip-chrome.ts` (all tokens are re-exported from the `@sim/emcn` barrel — no subpath import needed) — never hand-roll `rounded-lg`/`border`/`bg-[var(--surface-5)]`/`h-[30px]`/`px-2`/`text-sm`/focus rings.
 
 ### Props over className
 

.claude/rules/sim-url-state.md

@@ -187,9 +187,22 @@ Sort params live alongside — not inside — the feature's grouped filter parse
 
 A date-only param (a calendar anchor, a date filter) is stored as `yyyy-MM-dd` — never serialize a full `Date`/timestamp when only the day matters.
 
-**Local vs UTC — pick the parser that matches your date math.** nuqs's built-in `parseAsIsoDate` is **UTC-based** (`serialize` via `toISOString().slice(0, 10)`, `parse` to UTC midnight). If your `Date` is local-time (e.g. produced by local-time helpers and read by `date-fns` `startOfWeek`/`isSameDay`, which are all local), `parseAsIsoDate` will shift the day by ±1 in any non-UTC timezone on reload/deep-link/back-forward. For local-time date math, use a small local-date `createParser` that serializes/parses on local calendar fields (`getFullYear`/`getMonth`/`getDate` ↔ `new Date(y, m-1, d)`) with an `eq` comparing y/m/d. Only use `parseAsIsoDate` when the value is genuinely UTC/midnight-UTC. See `scheduled-tasks/search-params.ts` (`parseAsLocalDate`).
+**Local vs UTC — pick the parser that matches your date math.** nuqs's built-in `parseAsIsoDate` is **UTC-based** (`serialize` via `toISOString().slice(0, 10)`, `parse` to UTC midnight). If your `Date` is local-time (e.g. produced by local-time helpers and read by `date-fns` `startOfWeek`/`isSameDay`, which are all local), `parseAsIsoDate` will shift the day by ±1 in any non-UTC timezone on reload/deep-link/back-forward. For local-time date math, use a small local-date `createParser` that serializes/parses on local calendar fields (`getFullYear`/`getMonth`/`getDate` ↔ `new Date(y, m-1, d)`) with an `eq` comparing y/m/d. Only use `parseAsIsoDate` when the value is genuinely UTC/midnight-UTC.
 
-When the default is **dynamic** (e.g. "today"), make the param **nullable** (omit `.withDefault`) and derive the fallback in the hook (`const anchor = param ?? today`), so a clean URL means the dynamic default and navigating back to it writes `null` (clears the param). See `scheduled-tasks/hooks/use-calendar.ts`.
+```typescript
+const parseAsLocalDate = createParser({
+  parse: (v) => {
+    const [y, m, d] = v.split('-').map(Number)
+    return y && m && d ? new Date(y, m - 1, d) : null
+  },
+  serialize: (v) =>
+    `${v.getFullYear()}-${String(v.getMonth() + 1).padStart(2, '0')}-${String(v.getDate()).padStart(2, '0')}`,
+  eq: (a, b) =>
+    a.getFullYear() === b.getFullYear() && a.getMonth() === b.getMonth() && a.getDate() === b.getDate(),
+})
+```
+
+When the default is **dynamic** (e.g. "today"), make the param **nullable** (omit `.withDefault`) and derive the fallback in the hook (`const anchor = param ?? today`), so a clean URL means the dynamic default and navigating back to it writes `null` (clears the param).
 
 ## Selected-entity deep-link (store the id, derive the object)
 

.cursor/commands/add-enrichment.md

@@ -57,7 +57,7 @@ Why it matters: the cascade runner only bills (and only reads `output.cost.total
 Create `apps/sim/enrichments/{name}/{name}.ts` and a barrel `index.ts`. Mirror the existing entries (`work-email`, `phone-number`, `company-domain`, `company-info`).
 
 ```typescript
-import { SomeIcon } from 'lucide-react'
+import { SomeIcon } from '@sim/emcn/icons'
 import { filterUndefined } from '@sim/utils/object'
 import { normalizeDomain, splitName, str, toolProvider } from '@/enrichments/providers'
 import type { EnrichmentConfig } from '@/enrichments/types'
@@ -103,7 +103,7 @@ export { myEnrichment } from './my-enrichment'
 ```
 
 Rules:
-- Keep the file **client-safe**: import only `lucide-react`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
+- Keep the file **client-safe**: import only `@sim/emcn/icons`, `@sim/utils/*`, `@/enrichments/providers`, and the types. **Never import `@/tools`** here — the runner does the tool call.
 - `buildParams` returns `null` when inputs are insufficient (provider skipped). `mapOutput` returns `null`/empty for a miss (falls through). Use `filterUndefined` when assembling optional tool params; coerce numbers explicitly (don't pass `''` to number outputs).
 - Output `id`s are the keys `mapOutput` returns; output `name`s are the default column names (the user can rename them in the config).
 

.cursor/commands/emcn-design-review.md

@@ -12,7 +12,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 
 ## Steps
 
-1. Read the emcn public barrel at `apps/sim/components/emcn/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `apps/sim/components/emcn/icons/index.ts`
+1. Read the emcn public barrel at `packages/emcn/src/index.ts` (re-exports components, Calendar, Table*, and icons) to know what's available; for the full icon set read `packages/emcn/src/icons/index.ts`
 2. Read `apps/sim/app/_styles/globals.css` for CSS variable tokens
 3. Analyze the specified scope against every rule below
 4. If fix=true, apply the fixes. If fix=false, propose the fixes without applying.
@@ -22,7 +22,7 @@ This codebase uses **emcn**, a custom component library built on Radix UI primit
 ## Imports
 
 - Import from `@/components/emcn` barrel, never subpaths
-- Icons from `@/components/emcn/icons` or `lucide-react`
+- Icons from `@sim/emcn/icons`
 - Use `cn` from `@/lib/core/utils/cn` for conditional classes
 
 ## Design Tokens
@@ -39,7 +39,7 @@ Use CSS variable pattern (`text-[var(--text-primary)]`), never Tailwind semantic
 
 ## Buttons
 
-Intent-to-variant mapping (read the actual `buttonVariants` in `apps/sim/components/emcn/components/button/button.tsx` for the full variant set — it exposes more than listed here):
+Intent-to-variant mapping (read the actual `buttonVariants` in `packages/emcn/src/components/button/button.tsx` for the full variant set — it exposes more than listed here):
 
 | Action | Variant |
 |--------|---------|

.cursor/rules/emcn-components.mdc

@@ -1,6 +1,6 @@
 ---
 description: EMCN component library patterns
-globs: ["apps/sim/components/emcn/**"]
+globs: ["packages/emcn/**"]
 ---
 # EMCN Components
 
@@ -19,7 +19,7 @@ The menu surface intentionally diverges from the pill: `dropdown-menu.tsx` items
 
 ## Component catalogue
 
-- **`Chip` / `ChipLink`** — the pill button (`<button>` / Next `<Link>`). Variants: `ghost`, `filled`, `primary`, `destructive`, `border-shadow`. `leftIcon`/`rightIcon`, `active`, `fullWidth`, `flush`.
+- **`Chip` / `ChipLink`** — the pill button (`<button>` / Next `<Link>`). Variants: `primary`, `destructive`, `border-shadow`, `border`; the bare chip is implicit (omit `variant`). `filled` is deliberately NOT a `Chip` variant — it is reserved for chip fields/triggers. For a selected/toggle chip use the `active` prop, never a variant. `leftIcon`/`rightIcon`, `active`, `fullWidth`. Chips carry **no outer margin** — space between them is the parent's `gap`. The old `mx-0.5` default and its `flush` opt-out are gone; do not reintroduce either, and never add a margin to a chip through `className`.
 - **`ChipInput`** — single-line text field. `icon`, `endAdornment`, `error`, `inputClassName` (inner `<input>`); `className` styles the chrome wrapper.
 - **`ChipTextarea`** — multi-line sibling. `error`, `resizable` (off by default).
 - **`ChipDropdown`** — pill that opens a menu. Single OR multi-select via the discriminated `multiple` prop (one component, not two). Owns its trailing chevron — no `rightIcon`.

.cursor/rules/sim-styling.mdc

@@ -50,7 +50,7 @@ Value text `--text-body`; muted/placeholder/labels `--text-muted`; icons `--text
 
 ## Chip Components (consumer usage)
 
-`ChipInput`, `ChipTextarea`, `ChipModal*` own their full chrome. Consumers describe intent through PROPS; they never re-style the chrome. The canonical chrome lives in `apps/sim/components/emcn/components/chip/chip-chrome.ts` (all tokens are re-exported from the `@sim/emcn` barrel — no subpath import needed) — never hand-roll `rounded-lg`/`border`/`bg-[var(--surface-5)]`/`h-[30px]`/`px-2`/`text-sm`/focus rings.
+`ChipInput`, `ChipTextarea`, `ChipModal*` own their full chrome. Consumers describe intent through PROPS; they never re-style the chrome. The canonical chrome lives in `packages/emcn/src/components/chip/chip-chrome.ts` (all tokens are re-exported from the `@sim/emcn` barrel — no subpath import needed) — never hand-roll `rounded-lg`/`border`/`bg-[var(--surface-5)]`/`h-[30px]`/`px-2`/`text-sm`/focus rings.
 
 ### Props over className