feat(tv): enable the four cable channels #21 left commented out

[alycda]

What

Uncomments the four xdg.configFile entries for jj-log, sqlite,
postgres, and redis in home-manager/modules/tools/television.nix,
and replaces the stale VERIFY LOCALLY comment with what was actually
verified — and what still wasn't.

Why now

#21 added all five channel TOMLs but wired up only cheat.toml. The
commit message gives the sole reason:

Could not run tv in the build sandbox, so the channel schema is unverified

That's a sandbox limitation, not a defect in the TOML — and it's
checkable outside the sandbox. I ran it against television 0.15.9
on aarch64-linux.

What I verified

All five files parse and resolve as channels. The three doubts #21
recorded are settled for 0.15.9:

#21's doubt	Result
Might need one channels.toml with [[cable_channel]]	No — per-file cable/*.toml is current
Placeholder might be {} not {0}	{0} is correct
[metadata]/[source]/[preview] split	Current

For jj-log I checked the full path: the source command emits rows
whose first whitespace-delimited token is the short change id, and
jj show <id> accepts that token — so {0} resolves correctly.

What I did NOT verify

• The macOS config path (~/.config/television vs ~/Library/...).
• The DB channels' queries. sqlite3, psql, and redis-cli are
  all absent here and there's no live DB. Only their schema was
  checked. This is safe to ship because each declares requirements,
  so it stays inert on a machine without its client.

Both are now stated in the comment instead of being implied by a
commented-out line.

Side effect worth knowing

Anyone who ran the intermediate state has four ~/.config/television/cable
symlinks pointing into a since-GC'd store path, so tv jj-log currently
fails identically to a nonexistent channel. Activating a generation built
from this commit repoints them; hand-patching the profile doesn't survive
a restart.

Test plan

• just lint (statix + deadnix) clean
• nix-instantiate --parse OK
• All five source TOMLs present
• Post-switch: tv jj-log and tv cheat open on a real machine
• Post-switch on macOS: confirm the config path

🤖 Generated with Claude Code

[github-actions]

⊕ Entity-level changes

home-manager/modules/tools/television.nix

Status	Type	Name
~	orphan	module-level
Δ	binding	xdg.configFile

Summary: 2 modified across 1 file (1 modified orphan)

_{functions and classes, not lines · sem}