feat: ship dispatch 0.8.0 operator console batch

[galligan]

Summary

Ship the next Dispatch operator-console batch for 0.8.0:

• expand dispatch history with overview filters, transcript size gates, deduped tool rollups, worktree dirty/changed-file facts, and richer docs
• make configured dispatch new inherit Codex/App Server sandbox, approval, model, and service-tier defaults by omitting unset override fields from thread/start and initial turn/start
• keep inherited runtime policy durable by allowing nullable lane runtime policy fields in registry schema v8
• add dispatch completion bash|zsh|fish for deterministic shell completion scripts
• bump package metadata to 0.8.0

Validation

• uv run pytest tests/client/test_models.py tests/client/test_client.py tests/core/test_handlers.py tests/core/test_examples.py tests/registry/test_store.py tests/surfaces/test_derive_cli.py tests/surfaces/test_parity.py tests/test_smoke.py -q → 186 passed
• just check → ruff, format check, mypy, pytest 320 passed / 9 deselected, build, package contents check
• built dist/outfitter_dispatch-0.8.0.tar.gz
• built dist/outfitter_dispatch-0.8.0-py3-none-any.whl

Notes

This PR intentionally keeps primitive open explicit/read-only for compatibility. The inheritance behavior is on configured new, where repo presets, packets, and Codex project/profile defaults matter most.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Include untracked files in dirty history detection

When a lane's cwd only has newly created files, git status --porcelain=v1 -uno reports no paths because -uno selects the no mode for untracked files (git status -h documents -u modes as all, normal, no). That makes history --changed omit lanes where an agent only added new files, and the overview's dirty/changed-file facts incorrectly show the worktree as clean in that common case.

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