feat(framework): --preset <name> + --autopilot/--technical mode flags (#256)

[suleimansh]

Closes #256. Part of #204 (Open Loop), phase 2. Follows #251 (runFramework takes {preset, modes}) and #254 (discovery API).

The explicit picker on the CLI:

• --preset <name> resolves a shipped domain preset by name (builtinDomainPresets + selectPreset) and hands it to runFramework, so its loops + prompts + skills frame the build. Unknown name = usage error listing the available presets (exit 2).
• --autopilot / --technical activate the preset conditions variants (applied at load time, narrated). Given without --preset, they note they have no effect.

Additive: a run with no --preset is byte-identical.

Verified e2e against --fake:

framework --fake --preset software-development --autopilot
  ...framing with 3 persona(s), 2 skill(s)
  Domain preset: Software Development (modes: autopilot); 2-loop review policy available
framework --fake --preset bogus "a blog"
  unknown --preset: bogus. Available: software-development

New exports activeModes + resolveDomainPreset. Typecheck + 100 framework tests green. Changeset minor.

Next (separate): the-framework.yml persistence to auto-select preset + modes from the repo.