Add new ansi theme

[stevedylandev]

Summary

Adds a simple new theme that utilizes the existing terminal ANSI colors instead of hard code values.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that changes existing behaviour)
• Refactor / internal cleanup (no user-visible change)
• Documentation / comments only

Checklist

• make check passes locally with zero warnings (make fmt && make vet && make lint && make test)
• New or changed behaviour is covered by tests where practical
• Public API changes are reflected in documentation / comments
• This change is consistent with the project philosophy: one metric, one screen, zero configuration — see the Philosophy section in the README

Testing done

Built and ran on MacOS 26.6.2

Screenshots / recordings

Summary by Sourcery

Add an ANSI theme that makes the application follow the terminal’s configured color palette.

New Features:

• Add an ansi built-in theme that uses the terminal’s 16-color palette for text, gradients, borders, and logo rendering.

Enhancements:

• Support palette-based theme colors alongside existing RGB themes, preserving user terminal customization.

Documentation:

• Update the README to list nine built-in themes and document the new ANSI theme in the available theme list.

Summary by CodeRabbit

• New Features
  • Added a built-in ANSI theme that uses terminal color palettes instead of RGB gradients.
  • ANSI-based colors now apply consistently to logos, download and upload indicators, borders, and peak displays.
  • Updated the documented built-in theme count from 8 to 9.

[sourcery-ai]

Reviewer's Guide

Adds a ninth built-in ansi theme using terminal palette indices instead of hard-coded RGB gradients, with shared ANSI color selection paths for metrics, borders, logo, and animated accents.

Flow diagram for ANSI theme color selection

flowchart LR
    Theme[ansi theme] --> UsesANSI[usesANSI]
    UsesANSI -->|true| ANSI[ansiStop terminal palette index]
    UsesANSI -->|false| RGB[Existing RGB gradient]
    ANSI --> Metrics[Download and upload colors]
    ANSI --> Borders[Download and upload borders]
    ANSI --> Logo[Logo and animated accents]
    RGB --> Metrics
    RGB --> Borders
    RGB --> Logo

Loading

File-Level Changes

Change	Details	Files
Introduces an ANSI-palette theme that delegates theme colors to the terminal’s standard 16-color palette.	Adds ANSI palette stop fields to the theme model and registers the new built-in theme. Defines ANSI-based text, download, upload, border, logo, and pulse color mappings. Adds palette-stop selection with clamped, stepped intensity mapping while preserving RGB behavior for existing themes. Documents the ninth built-in theme in the README and theme listing.	internal/theme/theme.go README.md

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e67cb57a-fb55-4d21-a8a2-ee7bab64f8a3

📥 Commits

Reviewing files that changed from the base of the PR and between 944384b and 70de3ad.

📒 Files selected for processing (2)

• README.md
• internal/theme/theme.go

Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review.

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📝 Walkthrough

Walkthrough

The theme system adds a built-in ansi theme with terminal palette indices. ANSI-aware color functions select palette stops instead of interpolating RGB gradients. The README updates the built-in theme count.

Changes

ANSI theme support

Layer / File(s)	Summary
ANSI theme definition and registration internal/theme/theme.go, README.md	Theme adds ANSI palette fields. The new ansi theme is added to the theme list. The README reports nine built-in themes.
ANSI color selection internal/theme/theme.go	Color functions detect ANSI themes and use ansiStop for logo, transfer, border, and peak colors. Non-ANSI themes retain RGB gradients.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 70de3

This change adds an ANSI-based visual theme while preserving existing RGB themes and does not alter application services, data, permissions, or deployment behavior. No actionable merge-blocking risk remains beyond normal checks and review.

Suggested reviewers: programmersd21

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 10.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 10 functions across 1 files. (1 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the primary change: adding a new ANSI theme.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 10.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 10 functions across 1 files. (1 skipped: 1 unsupported.)

• Fix all pre-merge checks with AI

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

Sourcery assessment

Approved.

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[programmersd21]

wow, looks beautiful, thanks, ill merge it asap!!!

[programmersd21]

merged, thanks for the contrib!