feat(route)!: Fable rows are a hand-written override, never a route.sh outcome

The operator removed the "Fable can only be suggested after a failed Opus
5/xhigh session" policy on 2026-08-06 - it stood in the way too often. Until
now that policy was implemented as code: --opus-xhigh-failed was the ONLY
way route.sh's SELECTION chain could reach rows 5-6 (Fable), so the rubric
still enforced a policy the operator had already dropped.

Given a choice between (A) deleting the branches and the flag outright, so
the calculator's output range closes at row 4, or (C) keeping a path that
renders a Fable row on explicit instruction with rule=operator-override, the
operator chose A (AskUserQuestion) - CLAUDE.md is explicit that the rubric
stays the only deterministic lookup and a Fable choice is now always a
deviation from it, recorded in STATE as an override rather than produced
here. board.sh is untouched and still parses "Fable 5/high"/"Fable 5/xhigh"
written by hand into a board line (route-selftest.sh section 6 now pins that
half directly, since route.sh can no longer produce the strings itself).

TDD: every affected selftest check was rewritten to fail against the
unmodified route.sh first (72->68/69, confirmed red), then route.sh was
edited to match. --opus-xhigh-failed is gone outright - passing it now exits
2 like any other unknown argument, not silently accepted as a no-op.

route-selftest.sh: 73 -> 69 checks (three checks tested command shapes
row_advisor() can no longer produce; the two row-5/row-6 reachability checks
in section 1 collapsed into one "the flag is gone" check). coord 191, board
142 unaffected. Suite total 406 -> 402.

Also folds in a standalone fix already pushed this session: section 14 was
gating the wrong CLI fact (whether "claude --advisor fable" is rejected,
which row_advisor() never depends on) instead of the one it actually rests
on (whether opus/sonnet can advise a FABLE main model). Re-pointed and
verified against the installed CC 2.1.226.

Verified before committing: grepped every repo under ~/repos for a route
line carrying --opus-xhigh-failed (none - one repo has it in prose only,
not in its <!-- route: --> comment) and ran board.sh --plan/--brief over the
real tree to confirm no repo's command line broke. Sent a follow-up
coord-send to catalog superseding an earlier now-stale "406" stat-line
correction with the current 402.

skills/route/SKILL.md: usage block, "last-session record" framing, and the
closing --opus-xhigh-failed paragraph rewritten to match. CLAUDE.md, README
and CHANGELOG updated (checks 73->69, badge 406->402, new 0.21.0 entry).
Version bumped 0.20.3 -> 0.21.0 across plugin.json, package.json and all
three skill frontmatters (breaking CLI removal at 0.x -> minor, per v0.20.0
precedent).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ap1WKHCDPcSfpjo4ds2dQX

skills/board/SKILL.md

@@ -20,7 +20,7 @@ description: >-
   user names no repo and no tool — choosing *between* repos is this skill. Not for
   "where were we" inside the current repo: that is this repo's own STATE.md,
   already injected at session start.
-version: "0.20.3"
+version: "0.21.0"
 ---
 
 # board — which repo deserves the next session

skills/coord-send/SKILL.md

@@ -15,7 +15,7 @@ description: >-
   covers retiring a broadcast that has become wrong or obsolete: "retract that
   broadcast", "that announcement is outdated, pull it", "trekk tilbake kringkastingen",
   "den broadcasten er utdatert".
-version: "0.20.3"
+version: "0.21.0"
 ---
 
 # coord-send — natural-language front door for inter-repo messages

skills/route/SKILL.md

@@ -14,7 +14,7 @@ description: >-
   the operator names no model and no tool — choosing the model for the next
   session IS this skill. Not for choosing which REPO gets the next session:
   that is the `board` skill.
-version: "0.20.3"
+version: "0.21.0"
 ---
 
 # route — what the next session should run with
@@ -40,7 +40,6 @@ scoring step and are doing the thing this skill replaces.
              --reversibility <cheap|costly|one-way> \
              --scope <local|multi-file|cross-cutting> \
              --rationale "why these four scores" \
-             [--opus-xhigh-failed] \
              [--last-model <name> --last-effort <level> \
               --last-completed <yes|no> --last-corrections <n>]
 
@@ -94,11 +93,24 @@ procrastination available, and it hides the real defect.
 This check is worth more than the tokens the routing saves. Do not skip it by
 scoring `partial` to keep things moving.
 
+## Fable rows are never this calculator's output
+
+`route.sh` only ever emits rows 1-4. Rows 5-6 (Fable) fired from an explicit
+`--opus-xhigh-failed` flag until 2026-08-06, when the operator removed that
+policy; nothing replaced it as a trait-derived outcome. Choosing Fable is now
+always a deliberate deviation from the rubric — CLAUDE.md is explicit that the
+rubric stays the only deterministic lookup and a departure from it is recorded
+in STATE as an **override**, never as something this skill produces. If Fable
+is the right call for the next step's *form* (big-picture, review, planning),
+write the board line and the `rule` by hand — `board.sh` still parses
+"Fable 5/high" and "Fable 5/xhigh" — and say so plainly in the rationale rather
+than scoring the four traits to land there. One fact worth carrying into that
+override: a Fable session runs without an advisor.
+
 ## The last-session record
 
-Rows 5 and 6 (Fable) are history-dependent, so without a record they are dead
-policy. Write it whenever all four fields are actually known, from what happened
-in the session that is ending — never from what STATE.md prescribed:
+Write it whenever all four fields are actually known, from what happened in
+the session that is ending — never from what STATE.md prescribed:
 
 - `--last-model` / `--last-effort` — what this session actually ran with. Both
   are closed sets (`Sonnet 5|Opus 5|Fable 5`, and the verified effort levels),
@@ -143,13 +155,6 @@ One honest limit: `CLAUDE_EFFORT` is the *current* level, so if the operator
 changed it mid-session with `/effort`, "the effort this session ran with" is not
 a single value. Record the level the work was actually done at and say so.
 
-Read the previous `route-last` line out of STATE.md before overwriting it.
-Pass `--opus-xhigh-failed` **only** when it says an `Opus 5`/`xhigh` session ran
-at this same next step and did not complete it. A session that ran out of
-context, was interrupted, or stalled waiting on another repo is not a model
-failure — and Fable runs without an advisor, so a wrong escalation here is
-expensive. When it is ambiguous, leave the flag off.
-
 ## Writing it into STATE.md
 
 Three single-line HTML comments sit directly under the `👉 NESTE` heading, in