v0.51.8

This patch is mostly about the install path and about runs that tell you the truth when they go sideways.

The DeepSeek Harness integration gets a real installer story: install.sh now installs the dsh plugin when DSH is present, and — after two rounds of hardening — prints profile names you can actually paste back into a shell. The second round matters more than it sounds: the escaping added for terminal-control safety was delegating to printf %q, which on macOS's bash 3.2 escapes only part of a multibyte character. A profile named with an RTL override printed as invalid UTF-8 with the override half-neutralised. It now escapes byte-wise into printable ASCII, byte-identical on bash 3.2 and 5.3, and every quoted word round-trips.

On the run side, dirty worktrees no longer bleed into each other and observer handoffs survive; the CLI now asks the question its own ambiguity score implies rather than a generic one; and disposable artifacts moved into SQLite instead of loose files.

Features

• Store disposable artifacts in SQLite (#2171)
• Install the dsh plugin when DeepSeek Harness is present (#2165)
• Let an advisory lane answer from what was recently found here (#2154)

Bug Fixes

• Quote dsh profile names without bash 3.2's broken printf %q — macOS emitted invalid UTF-8 and only half-escaped RTL overrides
• Isolate dirty runs and preserve observer handoffs (#2178)
• Ask the question the ambiguity score implies (#2176)
• Preserve DSH profile names in recovery output (#2170)
• Say the advisory findings body is a list, because it is (#2162)

Documentation

• Source tour mapping three mechanisms to file:line coordinates (#2173)
• Document both DeepSeek integration directions and the dsh backend contract (#2161)

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What's Changed

• feat(advisory): let a lane answer from what was recently found here by @cohemm in #2154
• docs(deepseek): document both integration directions and the dsh backend contract by @Q00 in #2161
• fix(advisory): say the findings body is a list, because it is by @cohemm in #2162
• feat(install): install the dsh plugin when DeepSeek Harness is present by @Q00 in #2165
• fix(install): preserve DSH profile names in recovery output by @sergiobuilds in #2170
• docs: add source tour mapping three mechanisms to file:line coordinates by @Q00 in #2173
• fix(cli): ask the question the ambiguity score implies by @cohemm in #2176
• fix(ouroboros): isolate dirty runs and preserve observer handoffs by @Q00 in #2178
• feat(artifacts): store disposable artifacts in SQLite by @cohemm in #2171

Full Changelog: v0.51.7...v0.51.8