Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@app/http.php`:
- Around line 105-107: In dispatch(), the Host header parsing (currently using
$lines[1] and trim(explode('Host: ', ...)[1] ?? '') ) is brittle and
case/order-sensitive; fix it by iterating over $lines (or the parsed headers
array), performing a case-insensitive match for the header name (e.g.,
strcasecmp or preg_match for '^Host\s*:'), extracting the header value after the
first colon, trimming whitespace, and stripping any port portion (split on ':'
from the right or parse_url style) before assigning to $domain so $domain
reliably contains the hostname regardless of header order, case, or port. Ensure
this logic lives in dispatch() where $lines and $domain are handled and still
guards against missing headers by defaulting to an empty string.

---

Outside diff comments:
In `@app/views/install/installer/js/installer.js`:
- Around line 15-27: The normalizeStep logic assumes stepFlow is monotonic; when
stepFlow is non-monotonic (e.g. [1,6,4,5]) the "first greater step" logic
desynchronizes from server mapping — update normalizeStep to compute the mapping
using a sorted version of stepFlow so you pick the nearest greater-or-equal step
in numeric order instead of array order: use clampStep(step) as before, create a
sortedStepFlow = [...stepFlow].sort((a,b)=>a-b), then apply the greater-or-equal
logic against sortedStepFlow (return sortedStepFlow[0] if numeric <= first,
iterate sortedStepFlow to find first >= numeric, else return last); also apply
the same change where the same logic appears (the other occurrence around the
later block referenced in the comment). Ensure you still call clampStep and
preserve existing boundary behavior.

---

Nitpick comments:
In `@src/Appwrite/Platform/Installer/Http/Installer/Install.php`:
- Line 46: Replace the fully-qualified Boolean validator usage with an import
for consistency: add a use Utopia\Validator\Boolean; alongside the other
validators at the top of the file, then update the param call that currently
constructs new \Utopia\Validator\Boolean(true) (the ->param('runMigration', ...)
call) to use new Boolean(true) instead.

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@src/Appwrite/Platform/Tasks/Install.php`:
- Around line 777-789: The exec() call running the migration ($command, $output,
$exit) must be bounded with the same proc_open() + procCloseWithTimeout()
pattern used elsewhere to avoid hangs; replace the raw exec() invocation with
proc_open to start the process, capture stdout/stderr, then call
procCloseWithTimeout() to enforce a timeout and obtain the exit code, and on
timeout or non-zero exit use updateProgress (InstallerServer::STEP_MIGRATION,
InstallerServer::STATUS_ERROR) with the captured output and throw the
RuntimeException as before; ensure you reuse the same timeout/closing helper and
preserve the existing messageOverride/details handling.
- Around line 773-779: In runDatabaseMigration(), replace the bare docker
compose exec invocation with the same explicit compose context used by
runDockerCompose(): add the -f <compose-file> flag, --project-name
<project-name>, and --project-directory <project-directory> arguments and
include -T to disable TTY allocation so the command runs non-interactively;
build the command using the same variables or helpers that runDockerCompose()
uses (e.g., the compose file path, project name, and project directory) and keep
the existing exec() call to capture output and exit code.

---

Nitpick comments:
In `@app/views/install/installer/js/steps.js`:
- Around line 338-348: The code sets formState.migrate from the checkbox default
but doesn't notify listeners; after the branch that assigns formState.migrate =
checkbox.checked (the else branch), invoke dispatchStateChange?.('migrate') so
the initial seeded value is dispatched once; keep the existing change listener
on checkbox for subsequent updates and only call dispatchStateChange when you
set the seeded value (in the block that runs when formState.migrate was
undefined).