chore(cli): replace Ink + React with smaller-tree CLI libraries

[X-Guardian]

Related issue

Fixes #263

Description

Implements the Ink + React replacement proposed in the linked issue: swaps the Ink/React UI layer for @inquirer/prompts + cli-spinners + cli-table3 + ansi-escapes + cli-cursor. Same commands, flags, approval prompts, and --auto-approve semantics.

Improvements

• Detached stdin exits cleanly instead of crashing with Ink's "Raw mode is not supported" stack trace.
• Non-interactive output is ANSI-free — bar/spinner suppressed whenever stdout isn't a TTY.

Measured result:

Metric	Before	After
Shipped bundle (bundle/bin/cmds/handlers.js)	3.7 MB	2.9 MB
Transitive install size of the affected dep trees	22.6 MB	~6 MB

What changes:

• New helpers in packages/cdktn-cli/src/bin/cmds/helper/:
  • tty-stream.ts — StreamRenderer class. Log-above / bar-below pattern with a dots spinner (cli-spinners), wrap-aware row counting (via strip-ansi + out.columns so the erase/repaint doesn't cannibalise scrollback when the bar wraps), paused-state log buffering during interactive prompts, and a leading blank row above the bar that only paints once logs are streaming (so spinner-only commands stay single-spaced). Painting is gated on stdout.isTTY && !isCI (is-ci), so the bar suppresses itself for piped/redirected output and for CI runners whether or not they allocate a TTY.
  • project-runner.ts — runCdktfProject, replaces the useCdktfProject React hook by subscribing to CdktfProject's existing event callbacks. Maps cli-core's ProjectUpdate events to a discriminated Status union the UI consumes.
  • prompts.ts — promptApprove, promptOverride, and the requireTty / isNonTtyError helpers that let callers fall back to status.stop() cleanly when no TTY is present.
  • format.ts — pure render functions for outputs, stack list (Stack-name column sized to 40% of terminal width for stable column positions across runs), provider table, execution counter, watch state.
• All UI commands rewritten as .ts (no JSX): get, provider-list, synth, list, output, deploy, destroy, diff, watch.
• Deleted: ui/components/ (bottom-bars, stream-view, outputs), ui/hooks/cdktf-project.ts, helper/render-ink.tsx, src/test/ui/deploy.test.tsx (Ink-specific).
• packages/cdktn-cli/package.json: removed react, @types/react, ink, ink-select-input, ink-spinner, ink-table, ink-testing-library, yoga-layout-prebuilt. Added @inquirer/prompts@6.0.0 (was a devDep at 2.3.1; now a runtime dep at the latest CJS-compatible major), cli-spinners@2.9.2, cli-table3@0.6.5, ansi-escapes@4.3.2, cli-cursor@3.1.0, is-ci@^4.1.0. Versions are pinned to the latest CJS-compatible releases since the cdktn-cli bundle is CJS — bumping to the ESM-only majors is a separate ESM-output migration.
• packages/cdktn-cli/build.ts: dropped yoga-layout-prebuilt from esbuild externals.
• packages/cdktn-cli/tsconfig.json: dropped jsx: "react" and the explicit deploy.test.tsx include/exclude entries.
• knip.jsonc: dropped the dead yoga-layout-prebuilt ignore for cdktn-cli, narrowed its project glob from *.{ts,tsx} to *.ts.
• Dead React/JSX tooling sweep across the rest of the workspace: stripped jsx: "react" (and *.test.tsx excludes where present) from the 7 @cdktn/* sibling tsconfigs; removed 'tsx' from cli-core's jest moduleFileExtensions; reduced cdktn-cli's eslint.config.mjs from React-plugin-laden to a one-line spread of root config; removed eslint-plugin-react and eslint-plugin-react-hooks from root devDeps (cdktn-cli was the only consumer).

Manual verification

UI commands (TTY behaviour):

• cdktn synth — spinner ticks → "Generated Terraform code for the stacks: …" line (no streaming logs in the common case)
• cdktn list — spinner → columned stack list (no streaming logs in the common case)
• cdktn get — spinner → language/output message
• cdktn provider list — cli-table3 bordered output
• cdktn diff — logs scroll above pinned spinner bar; bar repaints without artefacts even when wider than the terminal
• cdktn deploy — inquirer takes over stdin at approval; Approve / Dismiss / Stop route correctly
• cdktn deploy --auto-approve — fully unattended; no prompt
• cdktn destroy — same approve flow as deploy
• cdktn watch --auto-approve — "Waiting for changes…" (spinner) → execution counter on file change; Ctrl-C tears down (cursor returns)
• cdktn diff | cat — stdout is a pipe → no ANSI escapes leak; no spinner; one line per log; no hang
• cdktn deploy | cat — stdout is a pipe but stdin is still the TTY → arrow-key prompt still works (matches old Ink behaviour)
• echo "" \| cdktn deploy (or any context where stdin is piped / detached) — stderr line "Approval required but stdin is not a TTY. … Stopping." then clean exit

Checklist

• I have updated the PR title to match CDKTN's style guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes

[so0k]

this looks awesome, but certainly feels like it needs to soak a bit and as we are close to cutting a release - can we merge this after cutting the release?

2 concerns raised by an automated review:

• In deploy.ts / destroy.ts, currently only handle non-TTY errors while awaiting approval prompts. With inquirer the prompt (depending on runtime behaviour) may reject on user cancellation, and status.stop() /status.reject() may need to be called explicitly or core-cli may hang?

• add replacement tests for the new non-React helpers:

  • helper/format.ts
  • helper/prompts.ts
  • helper/project-runner.ts
  • helper/tty-stream.ts
  • rewritten deploy / destroy prompt routing

  would it make sense to add small unit tests around:

  • renderOutputs preserving sensitive output redaction and nested/object formatting
  • renderProviderTable / stack-list formatting if snapshots are meant to be stable
  • prompt non-TTY fallback behavior
  • deploy/destroy prompt rejection or cancellation routing