Fix auto-stalled steering and long Goal plans

[ByBrawe]

Summary

Fixes the long-running Goal UX failure where a Goal auto-paused after the no-progress guard and then ignored a concrete foreground work instruction unless the user first sent /goal resume or a narrow continuation phrase. It also removes the implicit 30-turn ceiling for newly created Goals so genuinely long plans are not cut off solely because they need more assistant turns.

Changes

• Treat only the host-generated no-progress pause as recoverable from a concrete foreground work instruction.
• Resume through the guarded Goal command chain, consume internal command ownership, and preserve the original human instruction as normal Goal steering.
• Keep explicit /goal pause authoritative; unrelated work instructions do not silently resume it.
• Scale the no-progress window from 4 to 12 turns when a current native Todo plan still has open work, instead of hard-pausing every long plan after 3 read/recon/verification-heavy turns.
• Keep prior Todo telemetry visibly stale across /goal edit and prevent an unchanged native Todo digest from being silently rebound to the new Goal revision; a genuinely changed/rebuilt plan can bind current.
• Make cumulative turn caps opt-in for newly created Goals (maxTurns: 0 by default). Explicit --max-turns / /goal budget --max-turns limits and persisted legacy limits remain hard guards.
• Add regressions for auto-paused steering, explicit pause safety, 100-item Todo plans, Todo revision rebinding, unlimited default turn budget, and explicit turn caps.

Why

Observed session snapshots showed Goals with multiple pending Todos (and even effectively finished work) landing in paused after three turns without a new unique host mutation fingerprint. Current lifecycle UX then treated arbitrary foreground work instructions as normal chat while paused. Separately, a 100-step plan could still hit the default 30-turn cumulative budget even after the stall behavior was fixed. This patch makes system auto-pause recoverable and new long-running Goals turn-unbounded by default without turning every user message into a Goal edit or weakening explicit user pause/budget semantics.

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