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* feat(sync): --src-subpath + --exclude for monorepo subdir-source support (#753) Rebased port of PR #774 onto current master. A single git repo can hold N logical sources at subdirectories: git operations run at the discovered repo root (git rev-parse --show-toplevel — worktrees and submodules resolve natively) while file walking, imports, deletes and renames are scoped to the subpath. Passing the subdirectory directly as the repo path (auto-discovery) works through the same code path. Path-containment guards (the point of the feature): - NAV-1/NAV-2: the realpath-resolved scope must live inside the realpath-resolved git root — ../-traversal and symlinked subdirs pointing outside the repo are rejected before any git op. - NAV-1 TOCTOU: per-file realpath re-validation during the incremental import drain and rename reimport; symlink-escape files are recorded as failures (fail-closed — the bookmark cannot advance past an escape). - NAV-4: an --exclude set that filters out every candidate warns loudly. Scoped syncs use git-root-relative slugs + source_path in BOTH the full and incremental paths (runImport gains slugRoot), fixing the original PR's full/incremental slug divergence in the auto-discovery flow. --exclude matches scope-relative paths in both paths; exclusion never deletes previously-imported pages. The full-sync delete reconcile is scope-restricted and relativizes against the slug base so a healthy scoped source can't trip the #2828 mass-delete valve. .gitignore management resolves to the git root at every call site. Preserves all master-side sync work since the original branch: the #2828 mass-delete safety valve, #1794 resumable checkpoints + pinned targets, #1950 stall watchdog, #2335 heartbeat bump, #1970 bookmark reachability, and the git-ls-files walker (#2315/#2462/#2678, whose symlink/cycle hardening is untouched). Co-authored-by: Jeremy Knows <jeremy@veefriends.com> Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * fix: listEverCommittedPaths uses gitContextRoot after #753 root-triple refactor Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Garry Tan <garrytan@gmail.com> Co-authored-by: Jeremy Knows <jeremy@veefriends.com> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>