docs: gaze expanded side effect taxonomy — 10 new universal types

[yvonnedevlinrh]

Context

PR unbound-force/gaze#184 adds 10 new universal SideEffectType constants for multi-language support.

What changed

• 10 new types: ErrorSignal (P0), GeneratorYield/ContainerMutation/StreamOutput (P1), AsyncGeneratorYield/MetaprogrammingMutation/DescriptorEffect/ResourceManagement/ImportSideEffect/MonkeyPatch (P2)
• New SideEffect.Detail map[string]any field for language-specific metadata (optional, omitempty)
• IsKnownType() / ValidTypes registry added
• JSON Schema enum expanded; protocol version bumped to 1.1.0
• docs/protocol.md updated with a 48-type reference table

What needs updating

• Update the side effect type reference on the gaze page (currently references P0–P2 tiers, mentions P3–P4 as "not yet detected")
• Add the 10 new universal types with their tier assignments and semantic definitions
• Document the optional detail field in JSON output
• Note the protocol version bump to 1.1.0

Affected pages

• content/docs/projects/gaze.md — side effect taxonomy section (around lines 220–235)