opencode: two profiles, per-profile permissions, shared agent prompts

oc-work: local models only on the local key, edits and most commands ask,
loads instructions/work.md. oc-local (also oc, opencode): every model,
defaults to qwen3.8-flash-next-iq3s-med, edits and commands run except
destructive and outward-facing ones. On sctfw004 oc-local presents the work
key. personal.json and work-strict.json removed.

Agents: drop variant, which has no effect on LiteLLM models. dev takes its
permissions from the profile. The read-only agents deny redirects and the
write/exec flags of allowed commands, swap find for fd, and only allow
listing forms of git branch. review defaults to the uncommitted diff.

CLAUDE.md: add the comment, process and shell-tool rules from the laptop's
AGENTS.md, and note that OpenCode reads this file.

meta/hosts/mainframe.conf.yaml

@@ -22,9 +22,7 @@
     ~/.config/paru:             common/paru
     ~/.config/OrcaSlicer/user:       common/OrcaSlicer/user
     ~/.config/opencode/opencode.json:    common/opencode/opencode.json
-    ~/.config/opencode/personal.json:    common/opencode/personal.json
     ~/.config/opencode/work.json:        common/opencode/work.json
-    ~/.config/opencode/work-strict.json: common/opencode/work-strict.json
     ~/.config/opencode/local.json:       common/opencode/local.json
     ~/.config/opencode/agents/architect.md: common/opencode/agents/architect.md
     ~/.config/opencode/agents/brainstorm.md: common/opencode/agents/brainstorm.md

meta/hosts/sctfw004.conf.yaml

@@ -48,9 +48,7 @@
     ~/.config/networkmanager-dmenu: common/networkmanager-dmenu
     ~/.julia/config/startup.jl: common/startup.jl
     ~/.config/opencode/opencode.json:    common/opencode/opencode.json
-    ~/.config/opencode/personal.json:    common/opencode/personal.json
     ~/.config/opencode/work.json:        common/opencode/work.json
-    ~/.config/opencode/work-strict.json: common/opencode/work-strict.json
     ~/.config/opencode/local.json:       common/opencode/local.json
     ~/.config/opencode/agents/architect.md: common/opencode/agents/architect.md
     ~/.config/opencode/agents/brainstorm.md: common/opencode/agents/brainstorm.md