feat: add context filter modifier actions

[nathanhuh]

Summary

Adds filter-mode modifier shortcuts to the context picker so users can act on the selected filtered context without first leaving filter mode.

Related Issues

Closes #213

Validation

• make test
• make build

Checklist

• Scope is focused
• Branch name follows docs/branch-naming-harness.md
• Documentation harness reviewed (docs/documentation-harness.md)
• README updated if user-facing behavior changed
• Relevant docs/ pages updated if architecture, auth, config, or workflow changed
• Tests/validation included
• Breaking changes documented

Summary by CodeRabbit

Release Notes

• New Features

  • Added Ctrl+S shortcut to set up the selected filtered context in the Context Picker.
  • Added Ctrl+Y shortcut to copy exports for the selected filtered context.

• Documentation

  • Updated README with new Context Picker filter-mode keybindings.

[amazon-q-developer]

Summary

This PR successfully adds filter-mode modifier shortcuts (Ctrl+S and Ctrl+Y) to the context picker, enabling users to setup or copy exports for filtered contexts without leaving filter mode. The implementation is clean, follows existing patterns, and includes comprehensive test coverage.

Changes:

• Added Ctrl+S and Ctrl+Y keyboard shortcuts that work in filter mode
• Updated README documentation to reflect the new shortcuts
• Added context-aware help text that displays the shortcuts when in filter mode
• Included thorough unit tests covering both the UI display and actual functionality

Quality:

• ✅ Code follows established patterns and conventions
• ✅ Comprehensive test coverage with 4 new test cases
• ✅ Documentation updated appropriately
• ✅ No defects identified that block merge

The feature enhances user experience by reducing the number of steps needed to act on filtered contexts.

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ℹ️ Recent review info

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Run ID: 819e4eb3-e950-4f9b-8bb5-552b4bbe03c2

📥 Commits

Reviewing files that changed from the base of the PR and between ad32d7b and 0fa50dd.

📒 Files selected for processing (4)

• README.md
• internal/app/help.go
• internal/app/screen_context.go
• internal/app/screen_context_test.go

📜 Recent review details

🧰 Additional context used

📓 Path-based instructions (4)

**/*.go

📄 CodeRabbit inference engine (CLAUDE.md)

**/*.go: Use lipgloss for styled TUI output — column-aligned tables with dimmed labels in Go implementation files
Implement scroll windowing with formula: visibleLines := max(m.height-N, 5) in Go TUI implementation

Files:

• internal/app/help.go
• internal/app/screen_context.go
• internal/app/screen_context_test.go

---

⚙️ CodeRabbit configuration file

**/*.go: For Go reviews, look beyond compilation and prioritize nil pointer risks,
context propagation, AWS SDK pagination, error wrapping, deterministic
sorting, and stable table/detail rendering. For new AWS service work,
verify that repository interfaces, model mapping, app integration, and
tests are updated together.

Files:

• internal/app/help.go
• internal/app/screen_context.go
• internal/app/screen_context_test.go

internal/app/**

⚙️ CodeRabbit configuration file

internal/app/**: For Bubble Tea screen changes, verify message routing, key handling,
filter target resets, height-based windowing, help text, and back/home
navigation against the existing screen patterns.

Files:

• internal/app/help.go
• internal/app/screen_context.go
• internal/app/screen_context_test.go

README.md

📄 CodeRabbit inference engine (CLAUDE.md)

README.md: When adding, modifying, or deleting features, always update README.md in parallel with code changes
Update Currently Implemented Features table in README.md: add new services/features, update status changes (🚧→✅), remove deleted items
Update TUI Key Bindings table in README.md when key bindings are added, changed, or deleted
Update Usage section in README.md when new CLI commands or flags are added
Update Configuration section in README.md when configuration format changes

Files:

• README.md

---

⚙️ CodeRabbit configuration file

README.md: Verify that README changes match actual CLI/TUI behavior and that
Currently Implemented Features, TUI Key Bindings, Usage, and
Configuration content stay aligned with code changes.

Files:

• README.md

**/*_test.go

📄 CodeRabbit inference engine (CLAUDE.md)

Tests use mock client interfaces (see rds_test.go pattern) in Go test files

Files:

• internal/app/screen_context_test.go

---

⚙️ CodeRabbit configuration file

**/*_test.go: Check that tests cover API errors, mapping edge cases, and navigation
state transitions, not only happy paths. Prefer mock-based tests that do
not depend on external AWS calls.

Files:

• internal/app/screen_context_test.go

🔇 Additional comments (5)

internal/app/screen_context.go (2)

105-120: LGTM!

---

295-298: LGTM!

internal/app/help.go (1)

92-97: LGTM!

internal/app/screen_context_test.go (1)

144-168: LGTM!

Also applies to: 170-187, 458-534, 536-612

README.md (1)

351-351: LGTM!

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Walkthrough

This PR adds modifier-key actions (Ctrl+Y and Ctrl+S) that work directly on filtered contexts while the context filter input is active. Previously, users had to exit filter mode to execute these actions. The feature integrates into the help system, includes comprehensive filter-mode tests, and updates documentation.

Changes

Context Picker Filter Mode Modifier Actions

Layer / File(s)	Summary
Filter mode key handler and help display internal/app/screen_context.go, internal/app/help.go	While filtering contexts, ctrl+y copies shell exports and ctrl+s initiates setup for the currently selected (filtered) context. The context picker's help bar now detects filtering mode and renders filter-specific text including ctrl+y and ctrl+s hints, alongside navigation keys. The help mode shortcuts also append these new actions when the filter is focused and screen is context picker.
Filter mode behavior validation internal/app/screen_context_test.go	Four new tests verify filter-mode behavior: plain y and s still append to the filter text, filter-mode help bar includes modifier action hints, ctrl+y copies exports for the selected filtered context without changing persisted context, and ctrl+s sets up the selected filtered context and updates the persisted context.
Keybindings documentation README.md	Context Picker keybindings table updated to document new filter-mode shortcuts Ctrl+S (setup selected filtered context) and Ctrl+Y (copy filtered exports).

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• DevopsArtFactory/unic#214: Modifies internal/app/screen_context.go's viewContextPicker to conditionally render filter UI alongside this PR's changes to filter-mode help display.

Suggested reviewers

• YoungJinJung

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat: add context filter modifier actions' uses the required conventional prefix 'feat:' and clearly summarizes the main change of adding modifier shortcuts to the context filter.
Description check	✅ Passed	The PR description includes all required template sections: Summary, Related Issues, Validation, and completed Checklist items covering scope, documentation, README updates, and testing.
Linked Issues check	✅ Passed	All acceptance criteria from issue #213 are met: ctrl+y and ctrl+s work during filtering [screen_context.go, screen_context_test.go], plain y/s append to filter [screen_context_test.go], help text updated [help.go, README.md], and comprehensive tests added [screen_context_test.go].
Out of Scope Changes check	✅ Passed	All changes directly relate to implementing filter-mode modifier actions: README documentation, help text generation, context picker logic, and corresponding tests. No unrelated modifications detected.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
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• Create PR with unit tests
• Commit unit tests in branch feat/issue-213-context-filter-actions

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