fix(cli): stop reprocess dumping full result JSON on success

[HumanBean17]

Problem

java-codebase-rag reprocess printed the entire pipeline result as a giant JSON blob to stdout on success:

{"exit_code": 0, "graph_exit_code": 0, "graph_stderr": "...~4KB of graph-builder logs...", "stderr": "...vectors subprocess logs...", "stdout": "...cocoindex stats...", "phases_run": [...], "success": true}

Those graph_stderr / stderr / stdout fields hold captured subprocess logs that were already rendered as progress bars (and relayed to stderr) — re-emitting them as a single-line JSON payload was pure noise. This was inconsistent with init / increment, which emit a one-line {"message": "...", "success": true} on success.

Root cause: the default full-reprocess path did payload = result.model_dump() → _emit(payload) unconditionally on success.

Fix

_emit_reprocess_outcome now:

• Success → concise {"success": true, "message": "reprocess completed"} (matches init/increment). Partial modes get "(vectors only; ...)" / "(graph only; ...)"; the graph-only-install note from run_refresh_pipeline is preserved. TTY partial modes still print the "Rebuilt:/Skipped:" summary.
• Failure → unchanged: full payload with captured logs for debugging.

Result:

{"message": "reprocess completed", "success": true}

Test changes

• Updated the reprocess stdout baseline fixture + 3 stale assertions to the new contract (partial-mode success no longer carries phases_run; failure/preflight paths still emit the full payload).
• Fixed a pre-existing stale assertion in the heavy lifecycle test: default increment already does Lance + graph ("increment completed (Lance + graph updated)"), but the test still expected the old Lance-only message — this was blocking the heavy test from validating the reprocess change.

Validation

• 30 targeted tests pass, incl. both heavy cocoindex lifecycle tests (init/increment/reprocess success payloads verified end-to-end).
• Failure + preflight-blocker paths confirmed to still emit the full payload.

🤖 Generated with Claude Code