BE-032: CLI context drops the cwd sub-path — args resolve at the wt ROOT

Now:: OPEN

Input

Context

The model (Nav, Worktree): the context URI is the versioned cwd //worktree/path, and relative args resolve against it in the verb via resolve(context, base, rel). The code never threads the cwd sub-path: core/loop.js:337-342 sets be.repo/be.authority but composes no navCwd(io.cwd()) context PATH; every verb resolves relative args via wtpath(repo.wt, rel) (cat.js:163, status.js:109, ls.js:140, put.js:146, delete.js:171, get restorePath), and wtpath → navCwd(wt) always yields sub="" (discover.js:329) — root-anchored by construction. Only the pager's _composeCall (views/bro/pager.js:705) sees the sub-path, so CLI and pager disagree on the same command.

Goals

d MAIN/src && be cat main.c resolves //MAIN/src/main.c, not //MAIN/main.c` — repro first, then fix.
e context composition (navCwd(io.cwd()) incl. sub-path) threaded at CLI entry; pager and CLI converge on it.

Constraints

nfinement invariants stay: resolve()/wtpath NAVESCAPE guards byte-identical for the root case.
-root-relative semantics that are CORRECT (e.g. be put . at root, whole-tree get) must not shift.

WIP

Design decisions

Verified 2026-07-09 AFTER a763a86a (BE-030 uniform wt path handling) + 2dcfc392: still repros — cd be/core && jab cat loop.js exits 0 with EMPTY output (silently resolves be/loop.js); jab cat core/loop.js works. Silent-empty (no FILENONE) is an extra wart.
Verb matrix 2026-07-10 (gritzko repro + probes, all from a subdir cwd, bare arg vs root-relative): delete "0 row(s), 1 skipped" vs deletes; cat EMPTY vs content; log banner-only vs history; why EMPTY vs blame; diff probe inconclusive (clean file) but same wtpath resolver; put/post/log already on URI-010's 2026-07-07 list. Every path-taking verb is root-anchored.
2026-07-10: what the context SHOULD be per cwd (tree root vs hive wt vs sub mount, e.g. ~/src/journal/wiki → //wiki) is being pinned formally in BE-042; this ticket keeps the CLI thread-through + call-site sweep, sequenced after that model.

TODOs

Repro test: subdir cwd + cat/put/status/delete of a bare filename → today acts at the wt root.
Thread navCwd(io.cwd()) (with sub) into the minted context at loop.js _cli; verbs resolve against it.
Sweep the wtpath(repo.wt, rel) call sites for base assumptions (cat/status/ls/put/delete/get).