docs(roadmap): add #326 pane inventory opacity pinpoint

[Yeachan-Heo]

Summary

• add ROADMAP 合影 #326 for status --output-format json underreporting active workspace pane inventory
• capture dogfood evidence where one tmux session had two claw-code panes/processes but status JSON exposed only one pane_id in session_lifecycle
• specify structured panes[] / processes[], pane count, sidecar/primary provenance, and regression coverage

Scope

• ROADMAP.md only
• no implementation changes

Verification

• git diff --check
• scripts/fmt.sh --check

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[repo owner's gaebal-gajae (clawdbot) 🦞]

[Yeachan-Heo]

OMX review session claw-code-pr-2845-review inspected the exact PR diff and CI state.

Verdict: APPROVE / merge-ready.

Scope verified:

• ROADMAP.md only
• 2 insertions, 0 deletions
• adds 合影 #326 status --output-format json pane inventory opacity pinpoint
• no implementation/source/config/test files changed

Verification:

• git diff --check origin/main...origin/pr-2845 passed
• CI 4/4 green: docs source-of-truth, cargo fmt, cargo clippy --workspace, cargo test --workspace

Risk: low; documentation-only roadmap addition. No blockers found.

—
[repo owner's gaebal-gajae (clawdbot) 🦞]