Icon Request: focus_mode

### Icon Request: focus_mode

**Problem Statement**
Modern productivity and wellness apps increasingly include "focus mode" or "deep work" features. Currently, Material Design has `do_not_disturb` (crescent moon/circle with line) which represents silencing all notifications, but there's no icon for intentional, focused work states. A dedicated `focus_mode` icon would represent entering a flow state, deep work, or concentrated focus — distinct from simply muting notifications.

**Icon Description**
- **Basic Shape**: A human silhouette or head shape with a circular "focus ring" around it
- **Key Features**:
- Human head/silhouette (simple, minimalist)
- Circular ring or halo around the head (representing focus/attention)
- Small dots or dashes around the ring (representing notifications being temporarily muted or deprioritized)
- Alternative: A person sitting, reading, or in meditation pose
- **Style**: Filled or Outlined
- **Scale**: Should be recognizable at 24dp to 48dp

**Concept Variations**
1. Head with focus ring: Simple head silhouette with a circular ring around it
2. Person in meditation: Seated person with a glow/focus aura
3. Head with "tunnel vision": Head shape with inward-focused lines or arrows
4. Head with muted notifications: Head with crossed-out notification dots around it

**References**
- Related icons in Material: `do_not_disturb`, `psychology`, `self_improvement`, `meditation`
- Apps like Forest, Headspace, Calm, Focus@Will
- iOS "Focus" mode icon (crescent moon)

**Justification**
- Work culture shifting to prioritize deep work and productivity
- Wellness apps and OS-level features now include focus modes
- Needs to be visually distinct from `do_not_disturb`
- Represents a proactive choice to focus, not just reactive silencing

**Use Cases**
- Focus timers (Pomodoro)
- Productivity apps (Forest, Todoist, TickTick)
- Distraction blocker apps (Freedom, Cold Turkey)
- System focus modes (iOS Focus, Android Do Not Disturb Plus)
- Wellness and meditation apps

**Search Keywords**
focus, deep work, concentrate, flow state, productivity, meditation, mindfulness

**Similar Existing Icons**
- `do_not_disturb` - crescent moon (silencing notifications)
- `psychology` - brain/head (thought)
- `meditation` - person in meditation pose
- `self_improvement` - person on chair

**Verification**
- [x] I checked https://fonts.google.com/icons and this specific icon does not exist
- [x] I searched for "focus" and found no relevant icons
- [x] I understand I'm submitting a concept, not a finished design

**Note:** I understand that Google Fonts does not accept user submissions of finished icon designs (like SVG files) due to strict design guidelines, and that this repository is generated from upstream source files. I am submitting this as a concept for discussion, not a finished design.

Start by comparing the related Material icons named in the issue—do_not_disturb, psychology, self_improvement, and meditation—and review the proposed concept variations. There is no file, test, or implementation entry point identified. Done would require an agreed, repository-compliant icon direction that is visually distinct from do_not_disturb and recognizable at 24dp to 48dp.

Written by the indexing model from the issue text.