Add hook visibility hints

[abhinav-oai]

Why

Hook lifecycle rendering can be pretty noisy because it has to do two jobs at once: tell users about consequential hook behavior, and surface background work that only exists to provide model context.

This issue cluster asks for a way to separate those concerns:

• Allow Codex hooks to run silently without rendering completed hook entries #19383
• Add an option to collapse hook-injected context in the CLI transcript #20766
• Allow hook additionalContext to be model-visible but hidden from TUI #21696

This replaces the managed-hook-only suppression approach from #21577 with a presentation hint that preserves the full lifecycle stream while letting clients decide what should stay in the foreground.

What

• add per-hook visibilityHint = "default" | "quiet" | "verbose" config and carry it through HookRunSummary plus app-server lifecycle notifications
• make default the concise everyday rendering mode, keep quiet for hooks that should avoid transient rows, and reserve verbose for the full hook stream
• keep hook execution and lifecycle emission intact; visibilityHint is a rendering hint, not a suppression primitive

TUI rendering rules

visibilityHint	Running row	Completed context-only hook	Consequential output (Warning, Feedback, Stop, Error)
default	show	hide	show non-Context entries
quiet	hide	hide	show non-Context entries
verbose	show	show	show all entries

Blocked, failed, and stopped hooks always render a row; default and quiet still elide Context entries from those rows.

[chatgpt-codex-connector]

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[abhinav-oai]

what if we take this a step further and offer a better OOTB experience

since the current default is pretty verbose, what if change it so

• default is what hidden is doing but will still show "running"
• (new) verbose will be the same render all normally
• hidden will instead be called quiet