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feat(hud): smart context bar visualization (Wave 2-E)#1479

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feat/statusbar-wow-refactorfrom
feat/statusbar-wow-ctxbar
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feat(hud): smart context bar visualization (Wave 2-E)#1479
JeremyDev87 wants to merge 2 commits into
feat/statusbar-wow-refactorfrom
feat/statusbar-wow-ctxbar

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Closes the context bar issue. Stacked on #1465. 29 new tests. 158/158 pass.

Replaces the plain "Ctx:42%" text with a compact visual progress
bar so users can see context-window usage at a glance:

  [████░░░░░░] 42%        (safe, low usage)
  [███████░░░] 73%        (approaching danger)
  [█████████▓] 92%⚠       (critical — full bar + warning glyph)

Two visual signals distinguish the danger zones:
1. Dark glyph (▓) replaces the trailing full block at the danger
   threshold (85%) so "almost full" looks different from "full".
2. ⚠ suffix appended at the warning threshold (80%) — survives
   monochrome / greyscale renders.

New lib/hud_context_bar.py:
- CONTEXT_BAR_WIDTH = 10 cells (~10% resolution per cell)
- CONTEXT_BAR_THRESHOLDS = (80, 85, 95)  # warning, danger, critical
- _clamp_percentage(pct): defensive float coercion with [0, 100] clamp
- render_context_bar(used_pct, *, width): core renderer
- format_context_bar_segment(stdin_data): Claude Code stdin extractor

29 new tests cover:
- Basic shape (0/50/100 pct)
- Rounding (banker's round-half-to-even for 5/15/95)
- Warning/danger threshold boundaries (inclusive)
- Clamping (negative, >100, None, non-numeric, numeric string)
- Custom width (20, 0, 1)
- Segment extractor (empty, missing context_window, missing
  used_percentage, normal render, zero)
- Constants (width, threshold ordering)

158/158 pass.

Part of #1464 (Wave 0 statusbar refactor)
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codingbuddy-landing Ready Ready Preview, Comment Apr 11, 2026 1:29pm

Combined Wave 0 polish items from the #1465/#1485 review cycle:

1. Narrow `except Exception` to `except ImportError` in the 3 lib
   fallback import blocks (qual-1465 HIGH-1). Real logic bugs
   (SyntaxError, NameError, AttributeError) inside lib modules now
   surface immediately instead of being silently swallowed by a
   catch-all.

2. Drop inline stub functions for format_rate_limits and
   _get_fresh_version (qual-1465 HIGH-2). Eliminates the signature
   drift between canonical lib definitions and in-file fallback stubs
   observed on the integrator branch (Wave 1-A plugin_json_file
   kwarg drift). The outer main() try/except still catches any runtime
   failure and emits the minimal safe output via the BUDDY_FACE
   constant.

3. Hoist hud_velocity and hud_cache_savings imports to module top as
   _format_velocity_segment and _format_cache_savings (perf-1485 H1).
   Eliminates ~0.47us sys.modules lookup per render. Integrator branch
   only - no-op on refactor/wave branches where the inline imports
   don't exist yet.

4. Bump next to 16.2.3 for GHSA-q4gf-8mx6-v5v3 (landing-security-check).
   Aligns eslint-config-next and updates setup.test.ts assertion.

Refs: qual-1465 HIGH-1/2, perf-1485 H1,
GHSA-q4gf-8mx6-v5v3
@JeremyDev87 JeremyDev87 force-pushed the feat/statusbar-wow-ctxbar branch from e1e4b00 to eb95016 Compare April 11, 2026 13:11
@JeremyDev87 JeremyDev87 added statusbar-wave:2 Statusbar Wow new features (Wave 2-A~2-E) feat review:approved EVAL review 통과 (Critical/High = 0) labels Apr 11, 2026
@JeremyDev87
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Superseded by #1485

This PR was part of a stacked PR structure (feat/statusbar-wow-refactor base) that was incompatible with the repo's rebase & merge policy — each sub-PR targeted an intermediate branch, not master.

All of this PR's commits have been consolidated into #1485 (now with base: master and a linear 12-commit history after rebase). The consolidated PR contains:

  • Wave 0 — de622cc refactor(hud): extract 9 modules
  • Wave 1-A — cdf0772 fix(hud): version resolution fallback
  • Wave 1-B — 0606698 fix(hud): session self-heal
  • Wave 1-C — 87b779a feat(hud): rate limit severity icons
  • Wave 1-D — 894f515 feat(hud): adaptive layout engine
  • Wave 2-A — 5e8389d feat(hud): breathing buddy face states
  • Wave 2-B — 78ec6c5 feat(hud): cost velocity indicator
  • Wave 2-C — a306920 feat(hud): cache savings badge
  • Wave 2-D — 0fb3d5c feat(hud): mode rainbow ANSI coloring
  • Wave 2-E — 8cd78b2 feat(hud): smart context bar
  • Wave 3 — 295f5c4 feat(hud): integrate Wave 2-B/2-C
  • Review iter1 — b330528 fix(hud,landing): narrow fallback imports + next 16.2.3

EVAL review results from this PR (all reviewers, iter1 converged → Critical=0, High=0) already applied in #1485.

Closing as superseded. Use #1485 with GitHub's Rebase and merge button to land all 12 commits linearly on master.

@JeremyDev87 JeremyDev87 deleted the feat/statusbar-wow-ctxbar branch April 11, 2026 13:40
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