refactor(git-remotes): retrofit to the ADR-0020 context contract

Description 582 -> 237 chars, body 1217 -> 290 words. The single remotes.md
splits into config, fetch, push, and pull flow files.

Restores the confirm: true token to the force-push gate -- it is the git
plugin's cross-skill contract, gated on by git-orchestrate and git-branches.
Moves push.md's worked example off main, which the skill's own Step 1
refuses, and restores the never-bare---force directive.

plugins/git/.apm/skills/git-remotes/SKILL.md

@@ -2,13 +2,11 @@
 name: git-remotes
 
 description: >
-  Manage git remote repositories — add/remove/configure remotes, push/pull with safety checks,
-  handle fetch patterns and tracking branch updates, support multi-remote workflows.
-  Use when automating remote operations, pushing with force-push safety, fetching with pruning,
-  pulling with divergence resolution, or managing multi-remote tracking. Include indirect triggers:
-  any git operation that touches a remote, even if the user doesn't explicitly name the remote.
-  Do not use when working with local git history, commits, branches, or staging — use git-history
-  or git-branches instead.
+  Use when a git operation — remote config, fetch, push, or pull — touches a
+  remote, even when the user does not name it.
+  Not local commits -> `git-commits`.
+  Not local branches -> `git-branches`.
+  Not submodule pointers -> `git-submodules`.
 
 metadata:
   category: git-workflow
@@ -23,91 +21,29 @@ metadata:
 
 ## Gotchas
 
-- **Never force-push `main` or `master`, under any circumstances** — this is a hard refusal, not a `confirm: true` gate. If a force-push targets one of these branches, decline and explain why, regardless of how the request is confirmed.
-- **Force-push to any other branch requires explicit confirmation** — never execute `git push --force` or `git push -f` without user/agent approval. Always ask or require `confirm: true` flag first.
-- **`--force-with-lease` alone is not safe** — background processes (IDE plugins, cron jobs) that run `git fetch` silently defeat the protection. Always combine with `--force-if-includes` or use explicit SHA form `--force-with-lease=<ref>:<sha>`.
-- **Prune doesn't touch tags by default** — `git fetch --prune` leaves orphaned tags. Use `git fetch --prune --prune-tags` or configure `fetch.pruneTags true` globally.
-- **Pull with rebase rewrites history** — only safe for unpublished work. Rebasing already-pushed commits breaks everyone downstream. Check what's been pushed before rebasing.
-- **`git remote show` requires network access** — use `-n` flag for cached data if working offline. `git remote -v` lists URLs without network queries.
-- **Pull behavior defaults shift between Git versions** — older versions default to merge, newer versions to `--ff-only`. Always set `pull.ff only` explicitly for deterministic behavior.
+- **`--force-with-lease` alone is not safe** — background processes (IDE plugins, cron jobs) running `git fetch` silently defeat the protection. Combine it with `--force-if-includes`, or pin the explicit `--force-with-lease=<ref>:<sha>` form.
+- **Prune does not touch tags by default** — `git fetch --prune` leaves orphaned tags behind. Use `--prune --prune-tags`, or set `fetch.pruneTags true`.
+- **Pull defaults shift between Git versions** — older ones default to merge, newer to `--ff-only`. Set `pull.ff only` explicitly rather than trusting the installed default.
 
-## Operations
+## Step 1 — Clear the force-push gate
 
-### Remote Management
+`main` and `master` are a hard refusal: decline a force-push targeting either, whatever confirmation accompanies it, because no local approval can restore what the remote loses. On any other branch, `git push --force` and `-f` run only after the caller passes `confirm: true` for that specific push — for a human caller, prompt instead of failing.
 
-Use these to configure which remotes you push to and pull from:
+## Step 2 — Dispatch
 
-- **Add a remote**: `git remote add <name> <url>` or `git remote add -f <name> <url>` to fetch immediately
-- **Remove a remote**: `git remote remove <name>` (deletes remote + all tracking refs + config)
-- **Rename a remote**: `git remote rename <old> <new>`
-- **Inspect remotes**: `git remote -v` (show URLs) or `git remote show <name>` (live tracking status, requires network)
-- **Set-url separately for fetch vs. push**: `git remote set-url --push <name> <url>` changes only where pushes go — but fetch and push URLs must still reference the same repository. For genuine fetch-from-A / push-to-B workflows, use two separate named remotes instead; `--push` cannot do this. Full `set-url` variants (regex-targeted replace, `--add`, `--delete`): `references/remotes.md`.
-- **Remove a stale URL**: `git remote set-url --delete <name> <regex>`
-- **Inspect effective URLs**: `git remote get-url <name>` (shows URL after `insteadOf` rewrites) or `git remote get-url --push --all <name>` (all push URLs)
-- **Track only one branch**: `git remote add -t <branch> <name> <url>` (repeatable), or suppress tag import entirely with `git remote add --no-tags <name> <url>`
-- **Mirror a remote**: `git remote add --mirror=fetch <name> <url>` mirrors all refs locally (bare repos only); `--mirror=push` makes every push behave like `--mirror`
-- **Prune stale tracking refs without fetching**: `git remote prune <name>` (add `--dry-run` to preview first)
-- **Set the remote's default branch pointer**: `git remote set-head <name> -a` (auto-detect, requires a prior fetch), `git remote set-head <name> <branch>` (explicit), or `git remote set-head <name> -d` (delete `refs/remotes/<name>/HEAD`)
+Read the row matching the operation, and only that row — each file is self-contained. A task spanning two operations reads both.
 
-### Fetch Operations
-
-Use these to update your tracking branches without touching your local branches:
-
-- **Fetch from one remote**: `git fetch <remote>` — fetches all branches
-- **Fetch one branch only**: `git fetch <remote> <branch>` — stores the result in `FETCH_HEAD`, not a tracking ref
-- **Fetch from all remotes**: `git fetch --all` with optional `--prune` to clean up stale tracking refs
-- **Prune properly**: Use `git fetch --all --prune --prune-tags` to clean both branches and tags
-- **Configure auto-prune**: Set `git config --global fetch.prune true` to auto-prune on every fetch across all remotes (or `remote.<name>.prune` to scope it to one remote)
-- **Shallow clones**: `--depth=<n>` to deepen or create a shallow clone, `--unshallow` to convert to full history, `--update-shallow` to allow the shallow boundary to move. Details and the default fetch refspec: `references/remotes.md`.
-
-Fetch never modifies your local branches — it only updates remote-tracking branches (`refs/remotes/origin/*`).
-
-### Push Operations
-
-Use these to send your commits upstream. Default: safe push to same-named branch on the remote.
-
-- **Basic push**: `git push <remote> <branch>` — pushes to same-named remote branch
-- **Set upstream**: `git push -u <remote> <branch>` — push and configure this branch to track the remote
-- **Multi-remote push**: `git push origin develop` and `git push staging develop` sequentially, or use `git remote set-url --add <name> <url>` to push to multiple remotes with one command
-- **Force-push safety**: Always use `git push --force-with-lease --force-if-includes <remote> <branch>` over bare `--force`. Require explicit confirmation first — and never for `main`/`master` (see Gotchas). `--force-if-includes` is a no-op without `--force-with-lease`. If background tools (IDE, cron) auto-fetch and could poison the lease check, use a dedicated push-only remote instead — see `references/remotes.md`.
-- **Server-side enforcement**: `receive.denyDeletes`, `receive.denyDeleteCurrent`, and `receive.denyNonFastForwards` are enforced on the remote regardless of local flags — a hardened server rejects the push even with `--force`.
-- **Delete remote branch**: `git push <remote> --delete <branch>` (not `:<branch>` syntax; clearer and cleaner)
-- **Push everything**: `git push --all` (all local branches) or `git push --tags` (all tags)
-- **Push a single tag**: `git push origin <tag>`
-- **Delete remote branches with no local counterpart**: `git push --prune origin 'refs/heads/*:refs/heads/*'`
-- **Force only part of a multi-ref push**: prefix the one refspec that needs it with `+`, e.g. `git push origin +main develop` forces `main` while safe-pushing `develop`
-
-Refspec syntax is `[+]<src>[:<dst>]`:
-
-| Pattern | Meaning |
+| Operation | Read |
 |---|---|
-| `<branch>` | Push to same-named remote branch |
-| `<src>:<dst>` | Push `<src>` local ref to `<dst>` remote ref |
-| `+<src>:<dst>` | Force this refspec (non-fast-forward allowed) |
-| `:<branch>` | Delete remote `<branch>` |
-| `refs/heads/*:refs/heads/*` | Glob: push all matching branches |
-| `^refs/heads/dev-*` | Negative: exclude matching refs |
-| `tag <name>` | Sugar for `refs/tags/<name>:refs/tags/<name>` |
+| Add, remove, rename, inspect, or re-point a remote; tracking, mirror, and `set-url` config | `references/remote-config.md` |
+| Fetch or prune remote-tracking refs; shallow or partial fetch | `references/fetch.md` |
+| Push branches or tags; refspecs; force-push | `references/push.md` |
+| Pull — integrate remote changes into the current branch | `references/pull.md` |
 
-### Pull Operations
+## Step 3 — Return format
 
-Use these to fetch and integrate remote changes. Default strategy: `--ff-only` (fail if diverged, forcing a conscious choice).
+For agent callers, return:
 
-- **Pull with fast-forward only**: `git pull --ff-only` (recommended default — fails if you've diverged, forcing a rebase/merge decision)
-- **Pull with rebase**: `git pull --rebase` (replays your unpublished commits on top; linear history, but rewrites SHAs — only safe for unpublished work)
-- **Pull with merge**: `git pull --no-rebase` (three-way merge commit; preserves original commits, non-linear)
-- **Pull with rebase, preserving merges**: `git pull --rebase=merges` (like `--rebase`, but keeps intentional local merge commits during replay)
-- **Pull without integrating**: `git pull --squash` collapses incoming commits into staged changes without committing — you write the commit message
-- **Set pull strategy globally**: `git config pull.ff only` (or `pull.rebase true`; respects branch-specific overrides via `branch.<name>.rebase`). Full precedence order (CLI flag > `pull.rebase` > `branch.<name>.rebase` > `branch.autoSetupRebase`): `references/remotes.md`.
-- **Check before rebasing**: Always verify your commits haven't been pushed before using `--rebase`. Rebasing published commits breaks everyone downstream.
-- **Merge strategy default**: Git 2.34+ defaults to the `ort` merge strategy (`recursive` is now just an alias for it). Strategy options like `-X ours`, `-X theirs`, `-X ignore-space-change` still pass through unchanged.
-- **Submodules on pull**: `--recurse-submodules` only fetches submodules that are already checked out — newly added submodules are not initialized automatically. Use the `git-submodules` skill to initialize new ones.
-
-If pull diverges and you haven't set a strategy, the operation fails — this is good, forces a conscious choice. Never auto-merge diverged branches without asking.
-
-### Return Format (for agents)
-
-Return structured output:
 ```json
 {
   "success": true,
@@ -116,8 +52,8 @@ Return structured output:
   "branch": "main",
   "output": "...",
   "warnings": ["force-with-lease not confirmed"],
-  "recommendations": ["set pull.ff=only globally"]
+  "recommendations": ["set `pull.ff only` so the default does not vary by Git version"]
 }
 ```
 
-On failure, include `error` field with root cause and recovery suggestion.
+On failure, set `success: false` and add an `error` field holding the root cause and a recovery suggestion.