ci(e2e): make E2E workflows manual-only

[Farhan (fkb032)]

Summary

• makes the legacy E2E, Peekaboo E2E, and Computer Use E2E workflows manual-only while Tart-based E2E work is in progress
• deletes the automatic pull_request triggers instead of commenting them out
• keeps workflow_dispatch available for explicit debugging runs
• updates the legacy E2E header so it no longer advertises path/label-triggered execution

Claude review ran before implementation. No blockers. Callouts from review: e2e:* label-triggered scenarios are intentionally paused too; in-flight E2E runs may still finish/comment unless cancelled; manual runs currently provide workflow summaries/artifacts rather than PR-hosted report comments.

Test Plan

• ruby -e 'require "yaml"; ARGV.each { |path| YAML.load_file(path); puts "ok #{path}" }' .github/workflows/e2e.yml .github/workflows/peekaboo-e2e.yml .github/workflows/computer-use-e2e.yml
• actionlint -shellcheck= .github/workflows/e2e.yml .github/workflows/peekaboo-e2e.yml .github/workflows/computer-use-e2e.yml
• rg -n "^ pull_request:|^ workflow_dispatch:|pull_request\.branches|types: \[opened|labeled\]" .github/workflows/e2e.yml .github/workflows/peekaboo-e2e.yml .github/workflows/computer-use-e2e.yml

Docs

• No docs update needed

[github-actions]

	Warnings
⚠️	Please assign this PR to someone (usually yourself).

	Messages
📖	🤖 This PR touches CI / infra — reviewers please pay extra attention: .github/workflows/computer-use-e2e.yml .github/workflows/e2e.yml .github/workflows/peekaboo-e2e.yml

📋 PR Overview

Lines changed	78 (+10 / -68)
Files	0 added, 3 modified, 0 deleted
Draft / WIP	no
Has Test Plan	yes
New UI components	no
New Storybook stories	no
New Rust modules	no
New TS source files	no
New tests	no
package.json touched	no
Cargo.toml touched	no
Infra / CI touched	yes

🔬 Coverage

Report	Lines	Statements	Functions	Branches
apps/native/coverage/coverage-summary.json	17.3%	17.3%	27.8%	52.9%

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Update the Peekaboo contract test before removing PR triggers

With the Peekaboo workflow now manual-only, every workflow_dispatch run still reaches Validate Peekaboo workflow contract, which executes node tools/computer-use-e2e/peekaboo-workflow-contract-self-test.mjs; that test still asserts the removed paths trigger includes package/Cargo/Nix/devenv files, so manual runs fail before doing any E2E work. I confirmed this by running the self-test locally, which fails on the missing trigger-path assertion.

Useful? React with 👍 / 👎.

[Juanpe Bolívar (arximboldi)]

Nice! 👏

With this, the only Red checkmark is the ci/hercules/onPush/default thing. cooper (@czxtm) can we disable one so that we can disable merging of "red" PR's?