feat(consume): a table fragment is read under the heading it stands under

C3, the remaining half. The proposer names a table block with no heading of
its own after the line it starts on (`Tabell linje <n>`). A position, not a
name: searched, it matched no question, and shown, it told a reader nothing
about what the table is.

`consume.inherit_table_titles` reads such a concept under the title of the
nearest concept ABOVE it in the same source document -- in reading order, the
heading the table stands under -- ordered by `source_offset`, else
`source_lines`, one key per document and never mixed. Applied where the bundle
is loaded, so the ranking, the excerpt and the near misses all see the same
title; the excerpt keeps the file's own as `own_title`, so the name shown is
never mistaken for the one in the file. A table with nothing named above it,
or a document whose concepts do not all carry one position key, is left as it
is.

Chose to do it in the reading and not in the build: no bundle byte moves, no
collection has to be rebuilt, and the proposer's goldens stay pinned.
`consume.MECHANICAL_TITLE` is held against the proposer's own output by a test.

Suite on a clean tree after `git add`: 2418 passed, 2 skipped, 4 xfailed.
ruff, ruff format, mypy --strict clean. The search gate's table for the
previous commit is kept in local state.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CLAUDE.md

@@ -1551,6 +1551,11 @@ R761 **8** (S1-S6 + KP + KN), vegnormal **32** questions / **43**
   bundle once (`bm25.prepare`), cuts each sub-question as alone and
   interleaves the deliveries round-robin under the same `k`/`limit`; one
   question is `build_payload`'s bytes. The search gate's (e)/(f) go through it.
+  **C3 title inheritance:** a concept titled `Tabell linje N` (the proposer's
+  mechanical table-block name, `consume.MECHANICAL_TITLE`) is read under the
+  nearest concept above it in its document (`inherit_table_titles`, ordered by
+  `source_offset` else `source_lines`), in ranking, excerpt and near misses;
+  the excerpt carries `own_title`. A reading only -- no bundle bytes move.
   What follows describes the fusion.
 - Consume a bundle: `okf consume <bundle> --question "<q>"
   [--k N] [--limit N] [--out PATH] [--ref IDENTITY]` — the **pre-pass**