Add Goals navigation, native-goal creation, and running summary

[integry]

Architecture correction

Part of #2005 and #2002. The selected coding agent owns planning through its native /goal session. The UI must not expose a ProPR-authored issue hierarchy or scheduler as goal authority.

Scope

Add the first-class /goals route, navigation, typed API/hooks, create workflow, and list/summary page.

Creation

• Select repository, goal-capable agent, model, objective, parallelism preference, and Ultrafix preference.
• Describe parallelism/Ultrafix as policy supplied to the coding agent.
• The final epic PR is always draft/unmerged for human approval; do not offer automatic merge.
• Use real catalog capability/model metadata.
• Preserve accessibility, validation, idempotent submission, retry, demo/read-only behavior, and existing routes.

List/summary

Show objective/repository, host lifecycle, native provider goal status, selected/requested/effective model, provider-native plan/checklist progress, tokens, elapsed/active/paused time, message/recovery state, passively associated issue/PR counts, and final PR link when known.

Do not require node counts, controller active-task counts, hierarchy progress, or controller completion blockers.

Acceptance

• Tests cover goal-capable catalog filtering, native status/checklist summaries, model state, policy settings, lifecycle/recovery, stats, socket/pagination/reconnect, accessibility, and demo mode.
• Client mocks use the shared canonical native-goal contracts.
• Existing Plans/Tasks/navigation behavior remains green.

[propr-dev]

🤖 AI processing has started for this issue using claude agent with claude-sonnet-4-6 model.

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Processing Details:

• Agent: claude
• Model: claude-sonnet-4-6
• Branch: 2011/claude-sonnet-4-6-add-goals-navigation-crea-20260831-0012-ckg
• Base Branch: 2005-epic-goal-operator-experience
• Worktree: issue-2011-20260831-0012-claude-sonnet-4-6-ckg

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